试题与答案

下列关于电路图的说法中正确的是( ) A.含有电源的符号的图就是电路图 B.用开

题型:选择题

题目:

下列关于电路图的说法中正确的是(  )

A.含有电源的符号的图就是电路图

B.用开关和电源连接的图是电路图

C.含有用电器的图是电路图

D.用电路元件符号表示电路元件实物连接的图,叫做电路图

答案:

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下面是错误答案,用来干扰机器的。

参考答案:(1)、确定选煤产品数、质量的理论指标; (2)、评定可选性; (3)、计算数量效率。

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