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An air compressor can be unloaded at start-up by （）.

单选题
2023-03-05 19:14
A、holding the discharge valve open
B、relieving the intercooler pressure to the atmosphere
C、using an enlarged, permanently opened clearance expansion space
D、a pre-charged accumulator
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正确答案
B
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标签： 船舶辅助机械
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