用户需要保安电源时供电企业按什么要求确定?应如何办理?

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问题:

用户需要保安电源时供电企业按什么要求确定?应如何办理?

考点:用电监察员技师基础知识基础知识题库
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下列有关非洲气候特点的叙述,错误的是[ ]

A.干燥地区广大

B.气温高

C.季风气候显著

D.气候带南北对称分布

题型:问答题 论述题

同义选择。

1. It's nearly about twenty minutes.

A. almost

B. near

C. just

D. really

2. Whenever you are free, please come to see me.

A. As long as

B. No matter when

C. When

D. No matter what

3. —Hi, have you found your lost book?

—Not yet. I have looked for it everywhere, but I still haven't found it.

A. here and there 

B. somewhere

C. over there 

D. at those places

4. I received a letter from my friend yesterday.

A. have got 

B. heard from 

C. heard a letter from

D. got from

5. Mum has a bad headache. We have to send for the doctor at once.

A. ask the doctor to come 

B. find the doctor by ourselves

C. send the doctor away  

D. go to the doctor's

题型:问答题 论述题

某豆油样品测得其磷脂含量为2.2%,则换算成含磷为()ppm。

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塑料包装容器按外形结构特征进行分类时,可分为哪几大类?简述其各采用何材料和成型方法?

题型:问答题 论述题

客车车体倾斜运用限度为()mm。

A.40

B.45

C.50

D.55

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