搜题请搜索小程序“爱下问搜题”
问题 单项选择题

220kV/330kV送电线路跨越公路(高速及1～4级公路)导线至路面的最小垂直距离为( )。

A．7m/8m；
B．8m/9m；
C．9m/10m；
D．10m/11m。

答案

参考答案：B

单项选择题

There was a woman in Detroit, who had two sons. She was worried about them, especially the younger one, Ben, because he was not doing well in school. Boys in his class played jokes on him because he seemed so (21) The mother (22) that she would help her sons to do (23) in school by herself. She told them to go to the Detroit Public Library to (24) a book a week and do a book report for her.
One day, in Ben’s class, the teacher held up a rock and asked (25) anyone knew it. Ben put up his hand and the teacher let him (26) . "Why did Ben raise his hand" all of his (27) whispered (耳语) and wondered. "He (28) said anything. What could he possibly want to say" To their surprise, Ben not only (29) the rock, but also said a lot about it. He (30) other rocks in its group and even knew (31) the teacher had found it. The teacher and the other students were (32) Ben had learned this from doing one of his book (33) .
Later Ben became the (34) student of his class. When he finished high school, he went to Yale University and (34) became one of the best doctors in the United States.

Ⅱ. 完形填空

/Close
阅读下面短文，从短文后各题所给的四个选项(A、B、C和D)中选出一个最佳选项。

A．see

B．find

C．read

D．buy
查看答案
单项选择题

关于液压泵选择不正确的是？（）

A.要满足液压系统所提出的要求

B.液压泵的额定流量应稍高于系统所需要的最大流量

C.泵的额定压力应比系统压力略高

D.优先选用齿轮泵
查看答案