柴油机撑气冒黑烟的主要原因之一是（）．A.喷油时间过早 B.喷油时间过迟 C.喷油量

输液引起急性肺水肿的典型症状是()。

A．发绀、胸闷

B．心悸、烦躁不安

C．胸痛、咳嗽

D．呼吸困难、咳粉红色泡沫样痰

E．面色苍白、血压下降

简述斯宾塞“什么知识最有价值”的思想及时代意义。

If you are transmitting a distress message by radiotelephone you should（）.

A.use English language

B.always use the International Code

C.preface it by the word "Interco"

D.follow the transmission with the radio alarm signal

The nurse should plan to include which of the following interventions in the plan of care for a child admitted to the hospital with a medical diagnosis of febrile seizure

A．Keep the child supine.

B．Place the child in respiratory isolation and restrict visitors.

C．Keep the room temperature low and bedclothes to a minimum.

D．Place a padded tongue blade at the bedside.

低层大气的直接热源主要是（）

A.太阳辐射

B.大气逆辐射

C.大气辐射

D.地面辐射