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【单选题】
导管法水下浇筑混凝土时,导管插入水下使其下口距距离约( ) mm 进行浇筑
A.
100
B.
200
C.
300
D.
1000
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【简答题】装配滚动轴承时外圈与箱体孔的配合采用( ),内圈与轴的配合采用基孔制。
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【单选题】油类污染物的测定中,用分光光度计测定浓度所使用的原理是?
A.
牛顿原理
B.
伯努利定律
C.
朗伯-比尔定律
D.
热力学第二定律
【判断题】滚动轴承装配时,外圈与箱体的配合采用基孔制,而内圈与轴的配合采用基轴制。
A.
正确
B.
错误
【简答题】Fill in the blank with one of the words given below. Change the form where necessary.exaggerateinterpretintegralakinprobeallyduplicaterenovatedescendantpermeateHe tends to _________ the difficulties.
【判断题】装配滚动轴承时,外圈与箱体孔的配合采用基孔制,内圈与轴的配合采用基轴制。
A.
正确
B.
错误
【判断题】滚动轴承配合时,内圈采用基轴制,外圈采用基孔制。
A.
正确
B.
错误
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