China BET GB Standards List

China "BET" GB Standards List:

Standard Code	Standard Title	Standard Class	Order
GB/T 9951-2008	Information technology - Telecommunication and information exchange BETween systems - 34 pin DTE/DCE interface connector mateability dimensions and contact number assignments 信息技术系统间远程通信和信息交换 34插针DTE/DCE接口连接器的配合性尺寸和接触件编号分配	China National Standards BET	English PDF
GB/T 15629.2-2008	Information technology - Telecommunications and information exchange BETween systems - Local and metropolitan area networks - Specific requirements - Part 2: Logical link control 信息技术系统间远程通信和信息交换局域网和城域网特定要求第2部分：逻辑链路控制	China National Standards BET	English PDF
GB/T 15123-2008	Information technology - Telecommunication and information exchange BETween systems - DTE/DCE interface back-up control operation using GB/T 3454 interchange circuits 信息技术系统间远程通信和信息交换使用GB/T 3454的DTE/DCE接口备用控制操作	China National Standards BET	English PDF
GB/T 14397-2008	Information technology - Telecommunication and information exchange BETween systems - Start-stop transmission signal quality at DTE/DCE interfaces 信息技术系统间远程通信和信息交换 DTE/DCE接口处起止式传输的信号质量	China National Standards BET	English PDF
GB/T 13133-2008	Information technology - Telecommunication and information exchange BETween systems - DTE to DTE direct connections 信息技术系统间远程通信和信息交换 DTE到DTE直接连接	China National Standards BET	English PDF
GB/T 8997-2008	Calibration for alpha, BETa and alpha/beta surface contamination meters and monitors α、β表面污染测量仪与监测仪的校准	China National Standards BET	English PDF
GB/T 14056.1-2008	Evaluation of surface contamination - Part 1: BETa-emitters (maximum beta energy greater than 0.15 MeV）and alpha emitters 表面污染测定第1部分: β发射体（Eβmax>0.15MeV）和α发射体	China National Standards BET	English PDF
GB/T 12164.1-2008	Reference BETa radiations - Part 1: Methods of production β参考辐射第1部分：产生方法	China National Standards BET	English PDF
GB/T 11682-2008	Low background alpha and/or BETa measuring instruments 低本底α和/或β测量仪	China National Standards BET	English PDF
GB/T 11847-2008	Determination of specific surface area of uranium dioxide powder by BET capacity method 二氧化铀粉末比表面积测定 BET容量法	China National Standards BET	English PDF
GB/T 22238-2008	Information technology - TiBETan coded character set - Extension B 信息技术藏文编码字符集扩充集B	China National Standards BET	English PDF
GB/T 22034-2008	Information technology - Keyboard layout of the alphanumeric zone for TiBETan coded character set 信息技术藏文编码字符集键盘字母数字区的布局	China National Standards BET	English PDF
GB/T 14832-2008	Test methods for compatibility BETween hydraulic fluids and standard elastomeric materials 标准弹性体材料与液压液体的相容性试验	China National Standards BET	English PDF
GB/T 17821-2008	Rubber latex - Determination of density BETween 5℃ and 40℃ 胶乳 5℃至40℃密度的测定	China National Standards BET	English PDF
GB/T 21641-2008	Technique requirements of video conferencing system inter working BETween different technologies 基于不同技术的应急视讯会议系统互通技术要求	China National Standards BET	English PDF
GB/T 21640-2008	Technical standards for cooperation BETween equipments of IP-based video conference system 基于IP网络的视讯会议系统设备互通技术要求	China National Standards BET	English PDF
GB 17888.1-2008	Safety of machinery - Permanent means of access to machinery - Part 1: Choice of a fixed means of access BETween two levels 机械安全进入机械的固定设施第1部分：进入两级平面之间的固定设施的选择	China National Standards BET	English PDF
GB/T 21515-2008	Feed additive - Natural BETaine 饲料添加剂天然甜菜碱	China National Standards BET	English PDF
GB/T 5202-2008	Radiation protection instrumentation - Alpha,BETa and alpha/beta (beta energy >60keV)contamination meters and monitors 辐射防护仪器　α、β和α／β（β能量大于60keV)污染测量仪与监测仪	China National Standards BET	English PDF
GB/T 11789-2007	Ropes and cordage-Equivalence BETween naturai fibre ropes and man-made fibre ropes for use in the mooring of vessels 绳索和绳索制品系船用的天然纤维绳索与化学纤维绳索之间的等效性	China National Standards BET	English PDF
GB/T 20999-2007	Data communication protocol BETween traffic signal controller and control center 交通信号控制机与上位机间的数据通信协议	China National Standards BET	English PDF
GB/T 18311.26-2007	Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 3-26: Examinations and measurements - Measurement of the angular misalignment BETween fibre and ferrule axes 纤维光学互连器件和无源器件基本试验和测量程序第3-26部分：检查和测量光纤和插针轴线间的角偏差的测量	China National Standards BET	English PDF
GB/T 4127.1-2007	Bonded abrasive products - Dimensions - Part 1: Grinding wheels for external cylindrical grinding BETween centres 固结磨具尺寸第1部分：外圆磨砂轮（工件装夹在顶尖间）	China National Standards BET	English PDF
GB/T 10236-2006	Guide for compatibility and protection of interference effects BETween semiconductor convertors and power supply system 半导体变流器与供电系统的兼容及干扰防护导则	China National Standards BET	English PDF
GB/T 20610-2006	Road transport and traffic telematics - Electronic fee collection（EFC）- Interface specification for clearing BETween operators 道路运输与交通信息技术电子收费（EFC）参与方之间信息交互接口的规范	China National Standards BET	English PDF
GB/T 20542-2006	Infromation technology - TiBETan coded character set - Extension A 信息技术藏文编码字符集扩充集A	China National Standards BET	English PDF
GB 8662-2006	Fitting dimension BETween scalpel blades and handles 手术刀片和手术刀柄的配合尺寸	China National Standards BET	English PDF
GB/T 15629.1103-2006	Information technology - Telecommunications and information exchange BETween systems - Local and metropolitan area networks - Specific requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: Specification 信息技术系统间远程通信和信息交换局域网和城域网特定要求第11部分：无线局域网媒体访问控制和物理层规范：附加管理域操作规范	China National Standards BET	English PDF
GB 15629.1104-2006	Information technology - Telecommunications and information exchange BETween systems - Local and metropolitan area networks - Specific requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Further Higher 信息技术系统间远程通信和信息交换局域网和城域网特定要求第11部分：无线局域网媒体访问控制和物理层规范：2.4GHz频段更高数据速率扩展规范	China National Standards BET	English PDF
GB 15629.1101-2006	Information technology - Telecommunications and information exchange BETween systems - Local and metropolitan area networks - Specific requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: High-Speed Phy 信息技术系统间远程通信和信息交换局域网和城域网特定要求第11部分：无线局域网媒体访问控制和物理层规范：5.8GHz频段高速物理层扩展规范	China National Standards BET	English PDF
GB/T 20070-2006	Road vehicles - Mechanical coupling BETween tractors and semi-trailers - Interchangeability 道路车辆牵引车与半挂车之间机械连接互换性	China National Standards BET	English PDF
GB/T 20018-2005	Metallic and non-metallic coatings -- Measurement of thickness -- BETa backscatter methods 金属与非金属覆盖层覆盖层厚度测量 β射线背散射法	China National Standards BET	English PDF
GB/T 19889.4-2005	Acoustics-Measurement of sound insulation in buildings and of building elements-Part4:Field measurements of airborne sound insulation BETween rooms 声学建筑和建筑构件隔声测量第4部分:房间之间空气声隔声的现场测量	China National Standards BET	English PDF
GB/T 19847-2005	Mechanical vibration and shock-Analytical methods of assessing shock resistance of mechanical systems-Information exchange BETween suppliers and users of analyses 机械振动和冲击评价机械系统冲击阻抗的分析方法分析的提供者和使用者之间的信息交换	China National Standards BET	English PDF
GB/T 14691.6-2005	Technical product documentation-Lettering-Part6:Cyrillic alphaBET 技术产品文件字体第6部分:古代斯拉夫字母	China National Standards BET	English PDF
GB/T 14691.4-2005	Technical product documentation-Lettering-part4:Diacritical and particular marks for the Latin alphaBET 技术产品文件字体第4部分:拉丁字母的表示区别与特殊标识	China National Standards BET	English PDF
GB/T 19708-2005	AlphaBETical ordering of multilingual terminological and lexicographical data represented in the Latin alphabet 用拉丁字母系统表示的多语种术语和辞书资料字母排序规则	China National Standards BET	English PDF
GB/T 19807-2005	Plastics pipes and fittings Preparation of test piece assemblies BETween a polyethylene(PE)pipe and an electrofusion fitting 塑料管材和管件聚乙烯管材和电熔管件组合试件的制备	China National Standards BET	English PDF
GB/T 19587-2004	Determination of the specific surface area of solids by gas adsorption using the BET method 气体吸附BET法测定固态物质比表面积	China National Standards BET	English PDF
GB/T 19528-2004	Technique standard in holding the parents of hybrid BETween nile tilapia and blue tilapia 奥尼罗非鱼亲本保存技术规范	China National Standards BET	English PDF
GB/T 19408.1-2003	Agricultural vehicles--Mechanical connections BETween towed and towing vehicles--Part 1:Dimensions of hitch-hooks 农业车辆挂车和牵引车的机械连接第1部分:牵引钩尺寸	China National Standards BET	English PDF
GB 15629.11-2003	Information technology--Telecommunications and information exchange BETween systems--Local and metropolitan area networks--Specific requirements--Part 11: Wireless LAN Medium Access Control (MAC) andPhysical Layer(PHY) Specifications 信息技术系统间远程通信和信息交换局域网和城域网特定要求第11部分:无线局域网媒体访问控制和物理层规范	China National Standards BET	English PDF
GB 15629.1102-2003	Information technology--Telecommunications and information exchange BETween systems--Local and metropolitan area networks--Specific requirements--Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer(PHY) Specifications: Higher-Speed Physi 信息技术系统间远程通信和信息交换局域网和城域网特定要求第11部分:无线局域网媒体访问控制和物理层规范:2.4 GHz频段较高速物理层扩展规范	China National Standards BET	English PDF
GB/T 18594-2001	Technical product documentation--Lettering CAD lettering of the latin alphaBET numerals and marks 技术产品文件字体拉丁字母、数字和符号的CAD字体	China National Standards BET	English PDF
GB/T 18498-2001	Interworking BETween packet switched public data networks and public maritime mobile satellite data transmission systems 分组交换公用数据网和公用海事移动卫星数据传输系统之间的互通	China National Standards BET	English PDF
GB/T 11593-2001	Interface BETween data terminal equipment and data circuit-terminating equipment for synchronous operation on public data networks 公用数据网上同步工作的数据终端设备(DTE)和数据电路终接设备(DCE)间的接口	China National Standards BET	English PDF
GB/T 18473-2001	Electrical equipment of industrial machines--Serial data link for real-time communication BETween controls and drives 工业机械电气设备控制与驱动装置间实时串行通信数据链路	China National Standards BET	English PDF
GB/T 18236.1-2000	Information technology--Telecommunications and information exchange BETween systems--Local and metropolitan area networks--Common specifications--Part 1:Medium Access Control(MAC)service definition 信息技术系统间远程通信和信息交换局域网和城域网公共规范第1部分:媒体访问控制(MAC)服务定义	China National Standards BET	English PDF
GB/Z 17977-2000	Information technology--Telecommunication and information exchange BETween systems--OSI routing framework 信息技术系统间远程通信和信息交换 OSI路由选择框架	China National Standards BET	English PDF
GB/Z 15629.1-2000	Information technology--Telecommunication and information exchange BETween systems--Local and metro-politan area networks--Specific requirements--Part 1:Overview of Local Area Network standards 信息技术系统间远程通信和信息交换局域网和城域网特定要求第1部分:局域网标准综述	China National Standards BET	English PDF
GB/T 6107-2000	Interface BETween data terminal equipment and data circuit terminating equipment employing serial binary data interchange 使用串行二进制数据交换的数据终端设备和数据电路终接设备之间的接口	China National Standards BET	English PDF
GB/T 17973-2000	Information technology--Telecommunications and information exchange BETween systems--Use of OSI applications over the internet Transmission Control Protocol(TCP) 信息技术系统间远程通信和信息交换在因特网传输控制协议(TCP)之上使用OSI应用	China National Standards BET	English PDF
GB/T 17968-2000	Information technology--Telecommunications and information exchange BETween systems--Elements of management information related to OSI Data Link Layerstandards 信息技术系统间的远程通信和信息交换与OSI数据链路层标准相关的管理信息元素	China National Standards BET	English PDF
GB/T 17959-2000	Information technology--Telecommunications and information exchangeBETween systems--50-Pole interface connector mateability dimensions and contact number assignments 信息技术系统间远程通信和信息交换 50插针接口连接器配合性尺寸和接触件编号分配	China National Standards BET	English PDF
GB/T 11598-1999	Packet-switched signalling system BETween public networks providing data transmission services 提供数据传输业务的公用网之间的分组交换信令系统	China National Standards BET	English PDF
GB/T 11597-1999	Procedure for the exchange of control information and user data BETween a packet assembly/disassembly (PAD) facility and a packet mode DTE or another PAD 在分组装拆(PAD)设施与分组式DTE或与另一个PAD之间交换控制信息和用户数据的规程	China National Standards BET	English PDF
GB/T 11595-1999	Interface BETween data terminal equipment(DTE) and data circuit-terminating equipment (DCE)for terminals operating in the packet mode and connected to public data networks by dedicated circuit 用专用电路连接到公用数据网上的分组式数据终端设备(DTE)与数据电路终接设备(DCE)之间的接口	China National Standards BET	English PDF
GB/T 17797-1999	Technical rules for data interface BETween topogr-aphic database and geographic name database 地形数据库与地名数据库接口技术规程	China National Standards BET	English PDF
GB/T 17801-1999	Interface BETweendata terminal equipment(DTE) and data circuit-terminating equipment (DCE) for terminals operating in the packet mode and accessing a packet switched public data network through a public switched telephone network or an integrated service 经公用交换电话网或综合业务数字网或电路交换公用数据网接入分组交换公用数据网的分组式数据终端设备(DTE)和数据电路终接设备(DCE)之间的接口	China National Standards BET	English PDF
GB/T 17559-1998	Information technology--Telecommunications and information exchangeBETween systems--26-Pole interface connector matchability dimensions andcontact number assignments 信息技术系统间远程通信和信息交换 26插针接口连接器配合性尺寸和接触件编号分配	China National Standards BET	English PDF
GB/T 17543-1998	Information technology--Keyboard layout of the alphanumeric zone for TiBETan coded character set (basic set) 信息技术藏文编码字符集(基本集)键盘字母数字区的布局	China National Standards BET	English PDF
GB/T 17535-1998	Information technology--Telecommunications and information exchange BETween systems--Interface connector and contact assignments for ISDN basic access interface located at reference points S and T 信息技术系统间远程通信和信息交换在S和T参考点上定位的ISDN基本接入接口用的接口连接器和接触件分配	China National Standards BET	English PDF
GB/T 6031-1998	Rubber，vulcanized or thermoplastic--Determination of hardness (hardness BETween 10IRHD and 100 IRHD) 硫化橡胶或热塑性橡胶硬度的测定(10～100 IRHD)	China National Standards BET	English PDF
GB/T 17180-1997	Information processing systems--Telecommunications and information exchange BETween systems--End system to intermediatesystem routeing exchange protocol for use in conjunction with the protocol for providing the connectionless-mode network service 信息处理系统系统间远程通信和信息交换与提供无连接方式的网络服务协议联合使用的端系统到中间系统路由选择交换协议	China National Standards BET	English PDF
GB/T 16976-1997	Information technology -- Telecommunications and information exchange BETween systems--Use of X.25 to provide the OSI Connection-mode Network Service 信息技术系统间远程通信和信息交换使用X.25提供OSI连接方式网络服务	China National Standards BET	English PDF
GB/T 16960.1-1997	Information technology--TiBETan coded character set (basic set)--24×48 Dots matrix font--Part 1:Bai Ti 信息技术藏文编码字符集(基本集) 24×48点阵字型第1部分:白体	China National Standards BET	English PDF
GB 16959-1997	Information technology--TiBETan coded character sets for information interchange--Basic set 信息技术信息交换用藏文编码字符集基本集	China National Standards BET	English PDF
GB 16788-1997	Measurements and limits of immunity of cabled distribution systems primarily intended for sound and television signals operating BETween 30MHz and 1GHz 30 MHz～1GHz 声音和电视信号电缆分配系统抗扰度测量方法和限值	China National Standards BET	English PDF
GB 16787-1997	Measurements and limits of radiation of cabled distribution systems primarily intended for sound and television signals operating BETween 30MHz and 1GHz 30 MHz～1GHz 声音和电视信号的电缆分配系统辐射测量方法和限值	China National Standards BET	English PDF
GB/T 16724.3-1997	Information technology--Telecommunications and information exchange BETween systems--X.25-DTE conformance testing--Part 3:Packet layer conformance test suite 信息技术系统间的远程通信和信息交换X.25 DTE一致性测试第3部分:分组层一致性测试套	China National Standards BET	English PDF
GB/T 16791.1-1997	Financial transaction cards--Messages BETween the integrated circuit card and the card accepting device--Part 1:Concepts and structures 金融交易卡集成电路卡与卡接受设备之间的报文第1部分:概念与结构	China National Standards BET	English PDF
GB/T 16724.2-1996	Information technology--Telecommunications and information exchange BETween systems--X.25-DTE conformance testing--Part 2:Data link layer conformance test suite 信息技术系统间的远程通信和信息交换X.25 DTE一致性测试第2部分:数据链路层一致性测试套	China National Standards BET	English PDF
GB/T 15273.7-1996	Informationprocessing--8-Bit single-byte coded graphic character sets--Part 7:Latin/Greek alphaBET 信息处理八位单字节编码图形字符集第七部分:拉丁/希腊字母	China National Standards BET	English PDF
GB/T 16609-1996	Guide to uses of infra-red transmission and the prevention or control of interference BETween systems 红外传输的应用及系统间干扰的防护或控制的指南	China National Standards BET	English PDF
GB/T 15937-1995	The technical regulations for frequency sharing BETween the broadcasting service and the mobile and fixed services in the VHF/UHF bands VHF/UHF频段广播业务与移动和固定业务频率共用技术规定	China National Standards BET	English PDF
GB/T 15845.3-1995	Performance requirements of audiovisual terminals--System for establishing communication BETween audiovisual terminals using digital channels up to 2Mbit/s 视听用户终端技术要求使用2Mbit/s以内数字信道的视听用户终端之间建立通信的方法	China National Standards BET	English PDF
GB/T 15820-1995	Test of resistance to pull out ofjoints BETween polyethylene (PE) pressure pipes and fittings 聚乙烯压力管材与管件连接的耐拉拔试验	China National Standards BET	English PDF
GB/T 15645-1995	Interconnection BETween video tape recorders and attached instruments 磁带录像机与配接设备的互连	China National Standards BET	English PDF
GB/T 15273.4-1995	Information processing--8-Bit single-byte coded graphic character sets--Part 4:Latin alphaBET No.4 信息处理八位单字节编码图形字符集第四部分:拉丁字母四	China National Standards BET	English PDF
GB/T 15273.3-1995	Information processing--8-Bit single-byte coded graphic character sets--Part 3:Latin alphaBET No.3 信息处理八位单字节编码图形字符集第三部分:拉丁字母三	China National Standards BET	English PDF
GB/T 15273.2-1995	Information processing--8-Bit single-byte coded graphic character sets--Part 2:Latin alphaBET No.2 信息处理八位单字节编码图形字符集第二部分:拉丁字母二	China National Standards BET	English PDF
GB/T 15276-1994	Information processing systems--Information exchange BETween systems--Synchronous transmission signal quality at DTE/DCE interfaces 信息处理系统系统间信息交换 DTE/DCE接口处同步传输的信号质量	China National Standards BET	English PDF
GB/T 15273.1-1994	Information processing--8-Bit single-byte coded graphic character sets--Part 1:Latin alphaBET No.1 信息处理八位单字节编码图形字符集第一部分:拉丁字母一	China National Standards BET	English PDF
GB/T 14435.3-1993	Frequencysharing BETween the broadcasting-satellite services and terrestrial services--Frequency sharing between the broadcasting-satellite service(television)in one side and terrestrial broadcasting services(television)and terrestrial radio-relay system 卫星广播业务和地面业务间的频率共用 11.7～12.2 GHz和12.5～12.75 GHz卫星广播业务(电视)和地面广播业务(电视)及地面无线电中继系统间的频率共用	China National Standards BET	English PDF
GB/T 14435.2-1993	Frequency sharing BETween the broadcasting-satellite service and terrestrial services--Frequency sharing between the broadcasting-satellite service (television) and terrestrial broadcasting services(television) in frequency band 620～790MHz 卫星广播业务和地面业务间的频率共用 620～790 MHz卫星广播业务(电视)和地面广播业务(电视)间的频率共用	China National Standards BET	English PDF
GB/T 14435.1-1993	Frequency sharing BETween the broadcasting-satellite service and terrestrial services--Guide to frequency sharing between the broadcasting-satellite service (television) and terrestrial services 卫星广播业务和地面业务间的频率共用卫星广播业务(电视)和地面业务间的频率共用导则	China National Standards BET	English PDF
GB/T 14401-1993	Signalling BETween mobile station and base station and mobile services switching centre in public land mobile communication network at 450MHz band 公用陆地移动通信网(450 MHz频段)中移动台-基站-移动电话交换局之间的信令	China National Standards BET	English PDF
GB/T 13881-1992	Pneumatic braking connections BETween motor vehicles and towed vehicles 牵引车与挂车之间气制动管连接器	China National Standards BET	English PDF
GB/T 3259-1992	Transliterating rules of Chinese phonetic--AlphaBET on titles for books and periodicals in Chinese 中文书刊名称汉语拼音拼写法	China National Standards BET	English PDF
GB/T 13142-1991	Extension of the Latin alphaBET coded character set for bibliographic information interchange 书目信息交换用拉丁字母代码字符扩充集	China National Standards BET	English PDF
GB/T 13141-1991	Greek alphaBET coded character set for bibliographic information interchange 书目信息交换用希腊字母编码字符集	China National Standards BET	English PDF
GB/T 12449-1990	Interface for using dedicated interconnections BETween sound and television broadcasting transmitting equipment and supervisory equipment 以专用连接线方式互连的声音和电视广播发射设备与监控设备之间的接口	China National Standards BET	English PDF
GB/T 12128-1989	Reference sources for the calibration of surface contamination monitors--BETa-emitters and alpha-emitters 用于校准表面污染监测仪的参考源 β发射体和α发射体	China National Standards BET	English PDF
GB/T 12118-1989	Data processing--Vocabulary--Part 21:lnterfaces BETween process computer systems and technical processes 数据处理词汇 21部分:过程计算机系统和技术过程间的接口	China National Standards BET	English PDF
GB/T 11015-1989	Interface BETween data terminal equipment and automatic calling equipment for data communication 数据通信用数据终端设备和自动呼叫设备之间的接口	China National Standards BET	English PDF
GB/T 10262-1988	BETa backscattering thicknessmeter for small area of plating (coating) 小面积镀(涂)层β反散射厚度计	China National Standards BET	English PDF
GB/T 9025-1988	Cabled distribution systems primarily intended for sound and television signals operating BETween30 MHz and 1 GHz--Electrical and mechanical matching values 30 MHz～1GHz声音和电视信号的电缆分配系统机电配接值	China National Standards BET	English PDF
GB/T 8046-1987	Keyboard arrangement of thealphaBETical area of Mongolian character set for information processing interchange 信息处理交换用蒙古文字符集键盘的字母区布局	China National Standards BET	English PDF
GB/T 7514-1987	Conversion BETween the 7-bit coded character set for information processing interchange and the 5-unit code for the telegraph service 信息处理交换用七位编码字符集与电报用五单位电码之间的转换	China National Standards BET	English PDF
GB 7495-1987	The protecting distance BETweenoverhead power line and receiving station of AM broadcasting 架空电力线路与调幅广播收音台的防护间距	China National Standards BET	English PDF
GB/T 5080.7-1986	Equipment reliability testing--Compliance test plans for failure rate and mean time BETween failures assuming constant failure rate 设备可靠性试验恒定失效率假设下的失效率与平均无故障时间的验证试验方案	China National Standards BET	English PDF

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