油泵的轴向间隙磨损过大，会造成输油量增加。
参考答案：错
It was not until dark _____ he found _____ he thought was the correct way to solve the problem．
A．when; that
B．that; that
C．when; what
D．that; what
现役军官、文职干部因公出差路途较远或者任务紧急的，经批准可以乘座（）
A.飞机
B.火车
C.汽车
D.轮船
