数控机床加工精度一般在0.005-0.100mm之间,更重要的是数控机床()精度不受

题型:单项选择题

问题:

数控机床加工精度一般在0.005-0.100mm之间,更重要的是数控机床()精度不受零件形状复杂程度的影响。

A.加工

B.定位

C.测量

D.控制

考点:机修钳工考试机修钳工(技师)机修钳工(技师)题库
题型:单项选择题

The Story of the Farmer and His Donkey (驴子)

One day a farmer’s donkey fell down into a well. The animal cried pitifully for hours as the farmer tried to figure out what to do. Finally he decided the animal was old, and the well needed to be covered up anyway and it just wasn’t worth to save the donkey. So, he decided to bury(埋) it!

He invited all his neighbors to come over and help him. They all took shovel(铲子)and began to shovel dirt into the well. At first, the donkey realized what was happening and cried horribly, then slowly he quieted down till nothing more was heard.

A few shovels later, the farmer finally looked down into the well, and was surprised at what he saw. With every shovel of dirt that hit his back, the donkey was doing something wonderful—he would shake it off and take a step up!

As the farmer’s neighbors continued to shovel dirt on top of the animal, he would shake it off and take a step up. Pretty soon, everyone was surprised as the donkey stepped up over the edge of the well and went off quickly!

Life is going to shovel dirt on you, all kinds of dirt. The trick to getting out of the well is to shake it off and take a step up. Each of our troubles is a stepping stone. We can get out of the deepest wells by not stopping, never giving up, shaking it off, and taking a step up!

1. The donkey quieted down, because ________.

A. it was dead                           B. it was tired

 C. it had given up trying                   D. it had a good way to survive

2. We know from the story that ________.

A. all the donkeys in the world are clever         

B. it is easy for donkeys to fall into a well

C. the neighbors helped bury the donkey

D. the owner pushed the donkey into the well

3. The writer of the passage is most probably ________.

A. an optimistic person                  B. a pet lover

C. an animal protector                   D. a cold-hearted man

4. The writer wants to tell us “________”.

A. A cat has 9 lives                   B. Facing difficulties, never give up

C. A friend in need is a friend indeed       D. No pains, no gains

题型:单项选择题

简述茶树修剪有哪几种方法。

题型:单项选择题

演出进行到一定阶段,所有成员唱的歌数恰好等于要求他们唱的最少歌数,则在要求的最少歌唱,完之后,该演出中下一首要演唱的歌是几号歌

A.3

B.4

C.5

D.6

题型:单项选择题

货币供给量和利率作为中介目标孰优孰劣?

题型:单项选择题

税收执法管理信息系统V1.1版考核子系统,监控的业务系统有()。

A.税收综合征管软件

B.防伪税控系统

C.稽核协查系统

更多题库