试题与答案

在百分表、千分表()的轴上装有小指针,用以指示指针回转的圈数,其测力由弹簧产生。A、

题型:单项选择题

题目:

在百分表、千分表()的轴上装有小指针,用以指示指针回转的圈数,其测力由弹簧产生。

A、轴齿轮

B、中心齿轮

C、片齿轮

D、传动齿轮

答案:

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