电源专业日常使用的仪表有()。
A.接地电阻测试仪
B.兆欧表
C.功率因素表
D.微波功率计
参考答案:A, B, C
选择方框内的单词完成句子。
1. The experiment is really ___________.
2. The population has __________ in the last few years.
3. I'm surprised to hear the __________ news.
4. The quality of ________ is very important on sale.
5. We should try our best to protect __________ animals.
6. lemons are kind of __________ .
一般情况下,定位基准应与工序基准和设计基准重合,否则将产生()。