试题与答案

锯削时,刀锯在前进中()压力。 A.不用 B.应加 C.避免 D.防止加

题型:单项选择题

题目:

锯削时,刀锯在前进中()压力。

A.不用

B.应加

C.避免

D.防止加

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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