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问题 单项选择题 B型题

莨菪烷类生物碱（）

A.氮原子结合在侧链上

B.2个哌啶共用1个氮原子的稠环衍生物

C.2个吡咯啶共用1个氮原子的稠环衍生物

D.1个吡咯啶和1个哌啶共用1个氮原子的稠环衍生物

E.1个吡咯啶和1个哌啶骈合而成的桥环衍生物

答案

参考答案：E

单项选择题

战略诊断报告的( )在很大程度上显示了咨询人员的洞察力和分析能力，表明了咨询人员的业务水平。

A．内容

B．方式

C．特点

D．质量
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单项选择题

The Border Gateway Protocol (BGP) is an interautonomous system (76) protocol. The primary function of a BGP speaking system is to exchange network (77) information with other BGP system. This network reachability information includes information on the list of Autonomous System (ASs) that reachability information traverses. BGP-4 provides a new set of mechanisms for supporting (78) interdomain routing. These mechanisms include support for advertising an IP (79) and eliminate the concept of network class within BGR BGP-4 also introduces mechanisms that allow aggregation of routes, including. (80) of AS paths. These changes provide support for the proposed supernettting scheme.

（76）是（）

A.secubility

B.reachability

C.capability

D.reliability
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