试题与答案

锻锤产生的打击力,一般是下落部分质量的(  )倍左右。A.500 B.1000 C.

题型:单项选择题

题目:

锻锤产生的打击力,一般是下落部分质量的(  )倍左右。

A.500

B.1000

C.1500

D.2000

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D解析:return语句用于从被调函数带回一个函数值。void关键字表示"无类型",即不需要从被调函数中带回函数值,所以不需要return语句,故编译时出错。

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