电动机的零压保护环节的意义在于（）。A．防止电动机短路 B．防_爱下问搜题

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问题单项选择题

电动机的零压保护环节的意义在于（）。

A．防止电动机短路

B．防止电动机自行起动

C．防止电动机过载

D．防止电动机缺相

答案

参考答案：B

完形填空

完形填空。

Dear Sigmund Friend
     I am a Grade 9 student. I have  1 problem, and I do not know how to deal  2  it.
    I have a lot of homework every day, and I have no choice  3  to do it. I often stay up late to complete  4 ,
and then feel tired the next day.
     Sometimes, I want to  5 to do so much work, but usually I just accept it. I understand that it is important
to do my homework and  6  on time. However, I hardly have any spare time for my hobbies  7 playing
volleyball and ping-pong. I really feel bad about that. I often doubt whether it is worth  8 so hard.
    I am  9 a holiday without homework so that I can relax and have some time for my hobbies. What should I
do? Can you offer me some suggestions? They will be of great value to me. I hope to  10 you soon.
                                                                                                                                   Best wishes
                                                                                                                                        Millie

( )1. A. an
( )2. A. with
( )3. A. and
( )4. A. the housework
( )5. A. accept
( )6. A. hand it on
( )7. A. as
( )8. A. reading
( )9. A. looking for
( )10. A. hear of

B. a
B. for
B. so
B. the exercise
B. refuse
B. hand it in
B. such so
B. playing
B. looking forward to
B. hear about

C. the
C. to
C. but
C. exercises
C. take
C. hand in
C. such as
C. walking
C. looking after
C. hear from

D. (不填)
D. on
D. then
D. the exercises
D. agree
D. put it in
D. as much as
D. working
D. looking up
D. hear

单项选择题

下列不属于申请实施绿色通道制度的企业应该具备的条件的是( )。

A．具有良好信誉，诚信度高，年出口额600万美元以上
B．出口货物质量长期稳定，2年内未发生过进口国质量索赔和争议
C．1年内无违规报检行为，2年内未受过检验检疫机构行政处罚
D．根据国家质检总局有关规定实施生产企业分类管理的，应当属于一类或者二类企业