问题 单项选择题

主厂房安装间面积可()确定。

A.按一台机组扩大性检修的需要

B.按二台机组正常检修的需要

C.按一台机组吊装的要求

D.按检修多台机组的要求

答案

参考答案:A

解析:主厂房安装间面积可按一台机组扩大性检修的需要确定。缺乏资料时,安装间长度可取l.25~1.5倍机组段长度。安装间可布置于主厂房的一端、两端或中间段。

填空题
从方框中选择适当的选项填人短文中,使短文通顺、完整.选项中有两个选项是多余选项。
A. sister    B. perfect  C. until    D. how  E.happily  F  give up
G. difficult  H. in      I. go on    J. spendsK. times    L. what
     Jane Scott is fourteen.  She bcgan to study in a middle school last year.  She likes dancing and singing
and l. _________a lot of time on them.  But she hates math and does not work hard at it.  She thinks it 2._________to learn math. She falls behind her classmates and once failed the math exam.  She decides to 3._________.Her father is angry with her when he finds out about it.
    It was a Sunday.  Mr Scott gave a call to his 4._________who teaches math in another school.  He
hoped she would  come and  teach his daughter 5._________to study math.  The  woman  came and
said,  "You are a clever girl,  Jane.  I'm sure you can do well 6._________math if you work hard at it. "
     "I'm afraid I can't, Aunt," said Jane.  "Girls can't be good at math. "
      "1 don't agree," said the woman,  "I was good at it when I was a girl.  You must do more exercises
and practice math problems again and again 7._________ you master the subject. Remember: Practice
makes 8._________. Here is a math problem. Think  about  it  and  keep  working  till you get it right. "
     "OK," said the girl,  "I will try. "
     About an hour later Jane took the exercise book to her aunt and said,  "I've done the problem ten
9. _________."
     "Well done!" hcr aunt said 10._________.  "What result did you get?"
     "Ten different ones ! "
多项选择题