试题与答案

用螺杆钻具钻进时,强调合理钻压,目的是()。 A.输出扭矩最大 B.输出功率最大 C

题型:单项选择题

题目:

用螺杆钻具钻进时,强调合理钻压,目的是()。

A.输出扭矩最大

B.输出功率最大

C.输出转速最大

答案:

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参考答案:D

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