试题与答案

卡式接口的弹簧疲劳寿命不应低于()次。 A.500.0 B.800.0 C.1000

题型:单项选择题

题目:

卡式接口的弹簧疲劳寿命不应低于()次。

A.500.0

B.800.0

C.1000.0

D.1500.0

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C

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