导线压接用的液压机的压力表应完好，液压机的油位应正常。压接操_爱下问搜题

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问题多项选择题

导线压接用的液压机的压力表应完好，液压机的油位应正常。压接操作过程中应有专人监视压力表读数，禁止（）的状态下使用。

A.超压

B.差压

C.夹盖未固定到位

D.模具有裂缝

答案

参考答案：A, C

填空题

用方框中所给词汇的适当形式完成句子或对话

agree when had better be born food he until smoke sooner or later excuse me

1. Every country has its favourite __________.
2. -Pizza is very popular in Italy.
-Yes, I __________.
3. -__________. Can you tell me the way to the library?
4. -Can I have something to eat?
-No, you mustn't eat anything __________ you see the doctor.
5. __________ I grow up, I'll be a nurse and look after patients.
6. Henry Norman Bethune __________ in Canada in 1890.
7. You are so careless, __________ you'll have an accident.
8. You __________ get up earlier tomorrow. Or you can't catch the first bus.
9. Paul's uncle __________ a lot and he has cancer.
10. Tom is too young to look after __________.

单项选择题

在由1、2、3、4、5构成的各位数字不同的三位数中，任取一个恰是偶数的概率为 ( )。