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问题 多项选择题

关于电阻，下列说法中不正确的是（）。

A.电阻跟电压成正比，跟电流成反比

B.电阻率越小，说明导电性能越好

C.由电阻率的大小可知，铜导线的电阻比铝导线的电阻小

D.导线越细，电阻越小

E.导线越粗，电阻越大

答案

参考答案：A, C, D, E

单项选择题

Some of the world’s most beautiful cats are Persian cats. However, it must be acknowledged that all Persian cats are pompous, and pompous cats are invariably irritating.
If the statements above are true, each of the following must also be true on the basis of them EXCEPT:

A．Some of the world’s most beautiful cats are irritating.

B．Some irritating cats are among the world’s most beautiful cats.

C．Any cat that is not irritating is not a Persian cat.

D．Some pompous cats are among the world’s most beautiful cats.

E．(E) Some irritating and beautiful cats are not Persian cats.
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单项选择题

纯粹风险引起的事故构成（）的基础。

A.保险防范

B.保险规避

C.保险损失

D.保险危险
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