
A.0.3m/s
B.0.4m/s
C.0.5m/s
D.0.6m/s
[单选题]A.①②⑤⑥B.①③⑤⑦C.①②④⑥⑦D.①③④⑥⑦
[单选题]A.77%~79%B.80%~82%C.83%~85%D.86%~88%
[单选题]A.1.25~1.4kWB.1.4~1.50kWC.1.6~1.75kWD.1.8~2.0kW
[单选题]A.1.25~1.4kWB.1.4~1.50kWC.1.6~1.75kWD.1.8~2.0kW
[单选题]A.运行效率比额定效率降低了1.5%~2.5%B.运行效率比额定效率降低了4%~5%C.运行效率比额定效率提高了1.5%~2.5%D.运行效率比额定效
[单选题]A.0.3m/sB.0.4m/sC.0.5m/sD.0.6m/s
[单选题]A.77%~79%B.80%~82%C.83%~85%D.86%~88%