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【简答题】
笔画组合有三种方式: 、 、 。(请按笔画间由远及近的先后顺序填写)
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举一反三
【单选题】深沟球轴承主要用以承受扦向载荷,也可承受一定的轴向载荷。当轴承的径向游隙加大时,具有( )的功能,可承受较大的轴向载荷。
A.
推力球轴承
B.
角接触球轴承
C.
圆锥滚子轴承
D.
单列向心短圆柱滚子轴承
【单选题】Questions 3 and 4 will be based on the following news item. 4.
A.
Because the system does not function well.
B.
Because to install the system is difficult and expensive.
C.
Because the system is newly invented and hasn’t been put into use.
D.
Because the US Congress has doubt about the necessity of the system.
【简答题】什么是热电偶的分度表?镍铬-镍硅热电偶的分度号是多少?冷端为0°C时,标准E型热电偶测量540°C时热电式是多少?
【单选题】Questions 3 and 4 will be based on the following news item. Question 3
A.
Students learn how to make some dividends.
B.
America’s future investment bankers and accountants.
C.
Students learn how to save and invest money.
D.
Students learn how to use money.
【简答题】镍铬——镍硅热电偶分度号是()型。
【单选题】深沟球轴承主要用以承受径向载荷，也可承受一定的轴向载荷。当轴承的径向游隙加大时，具有（）的功能，可承受较大的轴向载荷。
A.
推力球轴承
B.
角接触球轴承
C.
圆锥滚子轴承
D.
单列向心短圆柱滚子轴承
【单选题】Questions 3 and 4 will be based on the following news item. 3.
A.
How to deal with sleep problems.
B.
The way to identify and treat sleep disorders.
C.
The effects of sleep loss and other sleep disorders.
D.
The relationship between sleep disorders and productivity.
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