油泵开动时，进、回油（）与压力表指针升降，应平稳、均匀一致。安全阀要经常保持灵敏可靠。_50430建筑质量管理审核员_全学科试题题库

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油泵开动时，进、回油（）与压力表指针升降，应平稳、均匀一致。安全阀要经常保持灵敏可靠。
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