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18. 下列压力控制阀中,( )的出油口直接通向油箱。
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18. 下列压力控制阀中,( )的出油口直接通向油箱。
A、顺序阀
B、减压阀
C、溢流阀
D、压力继电器
时间：2021-09-01 16:59
关键词：
青书学堂
平顶山学院
电气工程及其自动化
液压与气压传动
答案解析
C
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