水泵转速太低、流量过小，可能是轴承缺少黄油或轴承过紧造成的。（）
参考答案：对
-Can you believe I had to pay 30 dollars for a haircut?
-You should try the barber's ________ I go. It's only 15.[ ]
A．as
B．which
C．where
D．that
冲击韧性
