试题与答案

卷筒与钢丝绳直径之比应不小于()。A.10; B.12; C.14; D.16

题型:单项选择题

题目:

卷筒与钢丝绳直径之比应不小于()。

A.10;

B.12;

C.14;

D.16

答案:

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