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【简答题】
发动机磨合的目的是:加大承载面积,强化零件表面质量、改善润滑效果,显著地提高了零件的抗磨损能力和抗疲劳破坏能力,提高(延长)大修发动机的 。
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【简答题】SECTION A COMPOSITION (35 MIN) When people form. opinions about someone or something, what affects them most is not substance but style. Is style. more important than substance? Write a composition on...
【单选题】The reason ____ the people in the mainland go to Hong Kong to buy formula is that people are not convinced ____the safety of formula produced in the mainland.
A.
that; at
B.
why; at
C.
why; of
D.
what; of
【简答题】漏抗的大小对异步电动机的运行性能，包括起动转矩、最大转矩、功率因数有何影响，为什么?
【简答题】阅读理解。 So long as teachers fail to distinguish(区别) between teaching and learning, they will continue to undertake to do for children what only children can do for themselves. Teaching children to read ...
【单选题】Refer to the exhibit. When applying this hierarchical policy map on the on the tunnel1 interface， you measure high jitter for traffic going through class 1234. What is the most likely cause of this ji...
A.
The configuration of a hierarchical policy map on a tunnel interface is not supported.
B.
Class 5555 and class 5554 are both taking up 100% of the bandwidth， leaving nothing for class 1234.
C.
The burst size for the traffic shaping is wrongly configured to 15000； this would require an interface capable of sending at 150Mb/s.
D.
The burst size for the traffic shaping has been wrongly configured； it should be set as low as possible.
E.
The burst size for the traffic shaping has been wrongly configured； it should be set as high as possible.
【多选题】当电源电压和频率一定时，漏抗大小对感应电动机的影响正确的是( )。
A.
漏抗越大，最大转矩越小
B.
漏抗越大，起动电流越小
C.
漏抗越大，起动转矩越大
D.
漏抗越大，功率因数越低
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