试题与答案

在输送管的转弯处,固体浓度比直管段()。A、高 B、低 C、一样 D、无法确定

题型:单项选择题

题目:

在输送管的转弯处,固体浓度比直管段()。

A、高

B、低

C、一样

D、无法确定

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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