钻削工作中需用手添加冷却液时，要用毛刷进行

评标的工作目标是确定中标候选人，中标候选人一般取（）名。

A．1～3

B．1～5

C．1～6

D．1～10

根据句意及首字母提示完成句子。

1. We should take a p ______ examination every year. It's good for our health.

2. He was much a _____  by the sad news.

3. He a _____ some words to explain his idea.

4. I find it f _____ that I can't speak other languages.

5. I didn't r _____ I had made a mistake until he told me.

--- Another cup of coffee?

---No. thanks. I _____ be off. Marry is waiting for me.

A．can

B．may

C．must

D．might

患者就诊前一个月内发作一次或数次静息心绞痛及梗死后心绞痛，发作时ST段下移>1mm，持续时间<20分钟，临床称（）

A.轻度组

B.重度组

C.低危组

D.高危组

E.中危组

机车车辆制动力的大小是否由制动管定压决定的？