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问题 单项选择题

国家对药品实行品种保护制度的是

A．医疗机构配制的制剂
B．中药
C．中药饮片
D．没有实施批准文号管理的中药材
E．新发现和从国外引种的药材
《中华人民共和国药品管理法》规定

答案

参考答案：B

单项选择题

Both bus and tree topologies are characterized by the use of multipoint （1）. For the bus, all stations attach, through appropriate hardware （2）known as a tap, directly to alinear transmission medium, or bus. Full-duplex operation between the station and the tap allowsdata to be transmitted onto the bus and received from the （3）. A transmission from anystation propagates the length of the medium in both directions and can be received by all other（4）. At each end of the bus is a （5）, which absorbs any signal, removing it from thebus.

（5）是（）

A.tap

B.repeat

C.terminator

D.concentrator
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单项选择题

社会保险法不同于传统法律的突出表现是

A．以国家利益为本位

B．以社会利益为本位

C．以集体利益为本位

D．以个人利益为本位
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