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当前学科:高级井下作业工
题目:
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钢级为X95的27/8IF钻杆,本体环形横截面积为2000mm
2
,其抗拉强度为700MPa,则本体抗拉力为()。
A . A、950KN
B . B、1400N
C . C、3500KN
D . D、1400KN
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