A-A+ If the discharge valve is closed before the drive motor is stopped which of the following.. 2020-09-18 20:37:17 资格考试 阅读 问题详情 A.CentrifugalB.GearC.PropellerD.Turbine请帮忙给出正确答案和分析，谢谢！ 参考答案 查看解答
