单项选择题
A.0.001B.0.005C.0.01D.0.02
A.顺序阀B.单向阀C.调速阀D.溢流阀
A. ≤2.5B. =2.5~8.0C. =8.0~14D. ≥14
A.1.6vm/sB.16vm/sC.1.6mm/sD.16mm/s
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