标准漏率是指在环境温度23±7℃，入口压力为100KPa（±5%），出

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问题单项选择题

标准漏率是指在环境温度23±7℃，入口压力为100KPa（±5%），出口压力低于（）时的干燥空气（露点温度低于-25℃）通过的漏率。

A．1KPa

B．1MPa

C．1Pa

D．1mPa

答案

参考答案：A

填空题

选择合适的词填空

1. The boy was ( surprise; surprised) when he saw the alien.

2. Leila,please ( get out ; get out of) the shower quickly.I want to use it.

3. ( Because; While) I was walking down the street,I saw a stranger.

4. —What's up?

—Did you see the UFO? When it (landed; was landing) ,I was in the barber shop.

5. What was the robot doing ( while; when) the fire started?

6. He sits (in front of;in the front of) me.

多项选择题

临床常见的潜伏性感染有（）

A.单纯疱疹

B.带状疱疹

C.疟疾

D.结核病

E.乙型病毒性肝炎