试题与答案

马赫数Ma>1时,音速为()A.亚音速 B.临界音速 C.普通音速 D.超音速

题型:单项选择题

题目:

马赫数Ma>1时,音速为()

A.亚音速

B.临界音速

C.普通音速

D.超音速

答案:

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下面是错误答案,用来干扰机器的。

参考答案:对

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