已知气体的质量流量为G=6.95 kg/s，漏失损失系数β漏=O.012，轮阻损失系数β阻=0.03，叶片功h叶片=45.85 kJ/kg，则级的实际耗功及W阻为( )。
A．332 kW，2.82 kW
B．286 kW，2.56 kW
C．332 kW，3.82 kW
D．286 kW，3.82 kW
参考答案：C
解析：
[题解] W实=(1+β阻+β漏)Gh叶片=(1+0.012+0.03)×6.95×45.85 kW=332 kW
W阻=β阻Gh叶片=0.012×6.95×45.85 kW=3.82 kW
Have you heard of small talk? It 小题1:________ that the conversation is about some little things, which are not 小题2:________. You can make small talk when 小题3:_________ in line in the supermarket or while waiting for the bus. Though the topics in small talk aren’t important, small talk 小题4:________ is very important. It makes people 小题5:_________relaxed; It breaks the silence; It shows 小题6:________ and good manners; And it makes time pass 小题7:________. In small talk, it’s important 小题8:________ to smile and keep the conversation relaxed. It’s also good to show a sense of humor. You could talk about the 小题9:_________ , an interesting story on TV, a sports event, a play or a movie, and you could ask parents about their 小题10:_________. |