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问题 问答题 简答题

电动机速动片与启动片间隙为什么要求在0.5～2mm？

答案

参考答案：

如果速动片与启动片间隙小于0.5mm，会造成两片粘连，会使速动片在未经启动片上的拨钉拨动之前，就随启动片一起旋转.但大于2mm时，又有可能造成速动爪滚轮压不住速动片而失控.

单项选择题 B型题

青光眼患者禁用（）

A.氢氯噻嗪

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E.硝酸异山梨醇酯
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完形填空

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小题9:The good news made me ______________(feel)very happy

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