检修往复式压缩机连杆大头瓦分解面,通常用涂色法检查,接触面积应不少于总面积的(),且

题型:单项选择题

问题:

检修往复式压缩机连杆大头瓦分解面,通常用涂色法检查,接触面积应不少于总面积的(),且接触点应均匀。

A、30%

B、40%

C、50%

D、70%

考点:机泵维修钳工机泵维修钳工中级机泵维修钳工中级题库
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My father __ working hard, and reached his goal!
“Alan,” he often says to me, “If you want something, you have to work for it and never give up. Things do not come____ in life.” That is what I learned from my father.
小题1:
A.disaster B.lossC.successD.pity
小题2:
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小题3:
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小题4:
A.taughtB.workedC.studiedD.slept
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小题8:
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小题9:
A.discoverB.makeC.collectD.spend
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A.givingB.runningC.washingD.receiving
小题12:
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小题14:
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小题15:
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安全管理必须坚持“五同时”的原则包括计划、布置、检查、总结和()。

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B.头痛

C.泄泻

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