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3. 为平衡重力负载,使运动部件不会因自重而自行下落,在恒重力负载情况下,采用( )顺序阀作平衡阀

单选题
2021-09-01 19:11
A、内控内泄式
B、内控外泄式
C、外控内泄式
D、外控外泄式
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正确答案
B

试题解析

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为平衡重力负载,使运动部件不会因自重而自行下落,在恒重力负载情况下,采用内控外泄式顺序阀作平衡阀,在变重力负载情况下,采用()顺序阀作限速锁。
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