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问题 单项选择题

药物的内在活性(效应力)是指

A．药物穿透生物膜的能力
B．药物激动受体的能力
C．药物水溶性大小
D．药物对受体亲和力高低
E．药物脂溶性强弱

答案

参考答案：B

解析： 内在活性是指药物与受体结合后产生效应的能力。

判断题

起重设备的操作人员和指挥人员合格证种类应与所操作（指挥）的起重机类型相符合。（）
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单项选择题

The Customs surveillance zone include the following places except （）.

A. any seaport, railway and high way station, airport, border pass or international postal matter exchange where there is a Customs establishment

B. any place where Customs control is conducted

C. any place without a Customs establishment but which has been approved by the state council as a point of entry and exit

D. any place along the border of the country
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