
A.30
B.32
C.34
D.36
E.40
[单选题]A.30B.32C.34D.36E.40
[单选题]A.-0.8sinωtVB.-0.5sinωtVC.-0.4sinωtVD.-0.25sinωtV
[单选题]A.-0.8sinωtVB.-0.5sinωtVC.-0.4sinωtVD.-0.25sinωtV
[单选题]A.1450kWB.2950kWC.3150kWD.3860kW
[单选题]A.1450kWB.2950kWC.3150kWD.3860kW
[多选题]A.①—②—④一⑥—⑧—⑨B.①—②—⑤一⑥—⑧—⑨C.①—②—⑦一⑧—⑨D.①—②—④一⑥—⑦—⑧一⑨E.①—②—⑤一⑥一⑦—⑧一⑨
[单选题]A.26.7B.44.4C.50D.133.3
[单选题]A.塔体裙座应加高1.9mB.该泵设计基本合理C.塔体裙座应下降1.9mD.塔体裙座应加高1.4m