在传染病的预防工作中，有关单位应当按照国家规定，对下列人员采取有效的防护措施和医疗保

Andrew wanted to find another boy to be his best friend, but Annie told him ___.

A．not to

B．not to do

C．not do it

D．do not to

下图展示的是哪一区域性经济集团的旗帜及货币（样币）

A．亚太经济合作组织B．北美自由贸易区C．华沙条约组织D．欧洲联盟

气瓶阀在使用时常见故障是( )或轴空转。

A．结霜

B．冻结

C．磨损

D．漏气

The nurse is caring for a bulimic client and an anorectic client. What cognitive characteristics would be similar for both of these clients

A．Perfectionism, preoccupation with food.

B．Relaxed personality, but preoccupied with food.

C．No similarities.

D．Preoccupation with exercise.

第三成员不拥有下列选项内的（）

A、手持话筒

B、插孔箱

C、扩音器