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当前学科:初级油品储运工
题目:
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在装有静态混合器管路中,机泵运行时,压力降增大的原因是()。
A . A、管路容易堵塞
B . B、静态混合器容易堵塞
C . C、原因不详
D . D、法兰容易堵塞
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