搜题请搜索小程序“爱下问搜题”
问题 单项选择题

变压器做空载试验时，在一、二次侧分别进行，并且都加额定电压，则两种情况下分别测得的铁耗是（）。

A．相等

B．不相等

C．一次侧测得铁耗大

D．二次侧测得铁耗大

答案

参考答案：A

翻译题

翻译下列句子。

1. You should be quiet when you are in the reading room.

____________________________________________________

2. When I grow up, I'll be a nurse and look after patients.

____________________________________________________

3. If you don't want to go alone, I'll go with you.

____________________________________________________

4. After you use plastic bags, you mustn't throw them about.

____________________________________________________

5. People in the USA can't drink beer or wine before they reach 21.

____________________________________________________
查看答案
单项选择题

木立柱宜选用整料，当不能满足要求时，立柱的接头不宜超过（）个，并应采用对接夹板的接头方式。

A.4

B.3

C.1

D.2
查看答案