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问题 单项选择题

在通常状况下，某气体是一种无色、无味的气体，跟同体积的空气相比约为空气质量的1/14，是最轻的气体。该气体是（）。

A、氧气

B、氮气

C、氢气

D、一氧化碳

答案

参考答案：C

判断题

按照中国的BMI标准，如果BMI>25为肥胖。（）
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单项选择题

A client on an inpatient psychiatric unit at a community mental health center is pacing up and down the hallway. The client has a history of aggression. Which response by the nurse would be best when approaching the client（）

A. "If you can’t relax, you could go to your room. "

B. "Would you like your antianxiety medication now"

C. "You’re pacing. What’s going on"

D. "Let’s go play a game of pool. "
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