一般活节用销轴及孔直径大于40mm的销轴如只有一面受力,且磨损范围小于半圆,则磨损到

题型:单项选择题

问题:

一般活节用销轴及孔直径大于40mm的销轴如只有一面受力,且磨损范围小于半圆,则磨损到最大间隙时可以回转180使用,但要采取措施,防止误用磨损的一面。()

A、180

B、240

C、270

D、360

考点:综采维修钳工(初级)综采维修钳工(初级)题库
题型:单项选择题
(1)已知sinα+sinβ+sinγ=0,cosα+cosβ+cosγ=0,求cos(β-γ)的值.
(2)若sinα+sinβ=
2
2
,求cosα+cosβ的取值范围.
题型:单项选择题
根据下面短文内容,从方框中选择适当的词并用其正确形式填空,使短文完整、通顺。
morning, visit, like, how, drink, or, kind, possible, before, without
What can you do to keep healthy? Perhaps for children, healthy eating is one of the most important things. Here are some ideas about小题1: to eat healthily.
Having breakfast
A good breakfast is very important to children. It’s necessary to have it in the  小题2:. But some children often go to school   小题3: breakfast, just because they want to sleep a little longer. Remember that a good breakfast will help you study better.
Having milk
“My dream is that all the Chinese children can get half a kilogram of milk a day.” The Chinese Premier( * * ) Wen Jiabao said this during  小题4: to milk farm. Milk is also very important to children’s health. It makes children grow stronger. It’s better for you to   小题5: a glass of warm milk 小题6:going to bed. That will help you have a good sleep.
Having healthy food
Having healthy food is the most important. That means eating lots of different 小题7: of food, especially fruits and vegetables. Don’t eat too much chocolate 小题8: ice cream. Some of you 小题9: eating fast food, but in fact it is not good for your health. Try to eat healthy food as much as  小题10:.
Have healthy eating habits, and you will have a strong body.
题型:单项选择题

水行政主管部门或者其委托的安全生产监督机构应当自收到本规定第九条和第十一条规定的有关备案资料后( )日内,将有关备案资料抄送同级安全生产监督管理部门。

A.15

B.10

C.20

D.30

题型:单项选择题

下列各项资本支出中,属于流动资本的有()。

A.购买机器的资本

B.支付的水电费

C.购买原材料的支出

D.支付给工人的工资

题型:单项选择题

中间杆拆除吊线或拉线时应按()的顺序剪断线条。

A、先下后上、先侧后中

B、先下后上、先中后侧

C、先上后下、先侧后中

D、先上后下、先中后侧

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