A.21.5~22.5m/s
B.16.5~17.5m/s
C.14.5~15.5m/s
D.10~11m/s
[单选题]A.21.5~22.5m/sB.16.5~17.5m/sC.14.5~15.5m/sD.10~11m/s
[单选题]A.1条B.2条C.3条D.4条
[单选题]A.1条B.2条C.3条D.4条
[单选题]A.1条B.2条C.3条D.4条
[单选题]A.21.5~22.5m/sB.16.5~17.5m/sC.14.5~15.5m/sD.10~11m/s
[单选题]A.21.5~22.5m/sB.16.5~17.5m/sC.14.5~15.5m/sD.10~11m/s
[单选题]A.A点B.B点C.C点D.D点
[单选题]A.A点B.B点C.C点D.D点
[单选题]A.V1阀门开大,V2开大,V3开大B.V1阀门开大,V2开小,V3开大C.V1阀门开小,V2开大,V3开大D.V1阀门开小,V2开小,V3开大
[单选题]A.V1阀门开大,V2开大,V3开大B.V1阀门开大,V2开小,V3开大C.V1阀门开小,V2开大,V3开大D.V1阀门开小,V2开小,V3开大