Harry______ a taxi to work if he______the only bus that passes by his office.
A．would take, did not miss
B．would not have taken, hadn't missed
C．would not take, did not miss
D．would have taken, missed

Speaker A: Hello. Customer Service. What can I do for you?Speaker B: Yes. There’s something wrong with my electric oven. It doesn’t work now.Speaker A: All right. May I have your telephone number and address?Speaker B: （）

A．I beg your pardon.
B．What do you need?
C．Sure. Here you are.
D．Please just forgive me.

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常压贮槽内盛有石油产品，其密度为760kg／m3，黏度小于20eSt，在贮存条件下饱和蒸汽压为80kPa，现拟用65Y一60B型油泵将此油品以15m3／h的流量送往表压为177kPa的设备内。贮槽液面恒定，设备的油品入口比贮槽液面高5m，吸入管路和排出管路的全部压头损失分别为1m和4m。试核算该泵是否合用。若油泵位于贮槽液面以下1．2m处，问此泵能否正常操作?当地大气压按101．33kPa计。 点击查看答案