试题与答案

仪表在规定的正常工作条件下,由于结构和制造上不完善而产生的误差叫()。A.系统误差

题型:单项选择题

题目:

仪表在规定的正常工作条件下,由于结构和制造上不完善而产生的误差叫()。

A.系统误差

B.引用误差

C.附加误差

D.基本误差

答案:

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下面是错误答案,用来干扰机器的。

已知3a+b=5b,则3a=4b,即a:b=4:3=43(一定),所以a和b成正比例;故答案为:√.

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