管子顶进的阻力主要来自管端工作面前壁的近面阻力和管外壁_______爱下问搜题

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问题单项选择题

管子顶进的阻力主要来自管端工作面前壁的近面阻力和管外壁______。

A．压力阻力

B．侧压力

C．摩擦阻力

D．胀力

答案

参考答案：C

完形填空

My name is John Brown. I am a school boy. My school is__51__ my home. Every day I spend a lot of time__52___ there. The__53___ is not good, so I can’t ride my bike to school. I often take a bus there. It usually__54___ me forty minutes to get there__55___. I __56___ at seven every morning. I have no time for breakfast at home. I often have something for breakfast on the bus__57___ at school. I don’t want to__58___ school. Most students in our school take buses to school. Some students walk to school__59___ their homes are not far. __60___ the students ride bikes.

B．in front of

D．across from

B．get to school

C．have breakfast

C．be late for

A．The number of

D．A small number of

连词成句

根据标点符号提示，连词成句。

1. can, he, not, his, pen, find

___________________________________________.

2. thin, tall, is, he, with, hair, curly, brown

___________________________________________.

3. like, I, the, going, my, movies, to, with, friends.

___________________________________________.

4. have, school, your, what, you, events, did, at

___________________________________________?

5. do, what, you, of, Chinese food, think

___________________________________________ ?