某台水泵在转速不变时,当输送的水温度增加时,其轴功率()。
A、增加
B、降低
C、不变
D、先降低,后增加
参考答案:B
Look,the man, who is taking ____lead in the car race, is in____possession of the most expensive sports car.
A.the /the.
B.the/ .
C./the.
D.the/a
市区杆路可不装设抗风杆及减少防凌杆安装数。