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The opening or closing of the cylinder starting valve is controlled by _____.

2020-09-18 20:37:54 资格考试 阅读

问题详情

A.the starting air distributor

B.the cut-off valve on the air main

C.the main starting valve

D.the air bottle control valve

请帮忙给出正确答案和分析，谢谢！

参考答案

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