电动机的功率计算一般按负载先预选一台电机，然后进行下述哪些校验？（） A.发热校验

I don't think she will agree with us,  _       ?

A．will she

B．won't she

C．don't you

D．do you

     请认真阅读下面对话，并根据各题所给首字幕的提示，在标有题号的横线上，写出一个英语单词

的完整、正确形式，使对话通顺。

K=Kathy M=Mum

M: Kathy, have you decided what you're going to do in the vacation?

K: I need to e  1     some money. I'd try to find a job looking after children. What do you think, mum?

M: It's not an easy job and you don't have any particular k    2   about children. Some children could

     be noisy and badly b   3   . Do you have any other ideas?

K: Not  r    4  . I don't think much of the jobs I've seen  a   5  (A week later)

M: Kathy, are you still looking for a children job?

K: No, Mum. I m   6    to tell you earlier. I've been offered a job in the office of the local computer factory

    and it's well paid. I've decided to take it and will  s    7   on Monday.

M: Good! Tell me more d    8    about the job.

K: I will work as a s   9   , typing letters, answering phones calls and so on.

M: Some people may find it busy and b   10   , and you need to be patient and careful.

K: Thank you, Mum. I'll try my best.

在晚秋或寒冬，用人造烟幕来防御霜冻的原理是[ ]

A、增强太阳短波辐射

B、增强大气逆辐射作用

C、增强大气对太阳辐射的散射作用

D、增强大气对太阳辐射的反射作用

在一起行政诉讼案件中，被告进行处罚的依据是国务院某部制定的一个行政规章，原告认为该规章违反了有关法律。根据我国宪法规定，下列哪一机关有权改变或者撤销不适当的规章( )。

A．国务院

B．全国人民代表大会常务委员会

C．最高人民法院

D．全国人民代表大会法律委员会

电炉炼钢的优点是冶炼周期短、生产效率高、成本低等。