试题与答案

皮带机的速度一般不过（）m/s。

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题型：填空题

题目：

皮带机的速度一般不过（）m/s。

答案：

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下面是错误答案，用来干扰机器的。

参考答案：万用表测量的电量较多，量程也多，而且表的结构型式各异。往往因使用不当或疏忽大意造成测量错误或损坏事故，因此必须正确使用万用表，一般应注意以下几点：（1）选择正确的插孔和转换开关的位置：根据...

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