（）是制定某一战略所必须依据并制约该战略实施的环境和条件。 A.国际战略环境 B.战

重要场所的应急照明供电方式，应选用下列（）之一。

A.正常电源的馈电线路

B.独立于正常电源的发电机组

C.蓄电池

D.应急照明灯自带直流逆变器

临床上常用的细菌药物敏感试验方法（）

A.K-B法

B.纸片法

C.MIC法

D.杀菌试验

E.体外联合药敏试验

科学管理的中心问题是( )。

A．提高企业盈利率

B．提高管理水平

C．提高人的积极性

D．提高劳动生产率

煮饭前要将大米多淘洗几遍，直到水变清为止。

How were Frank and I connected().

A.My grandmother and his grandmother were sisters.

B.We were first cousins once removed.

C.We were second cousins once removed.

D.My great-grandmother and his great-grandmother were sisters.