（）用于控制油路，使自动变速器油只能朝一个方向流动。
A.主调节阀
B.手动阀
C.换挡阀
D.单向阀
参考答案：D
The man ____ of killing his family members was reported to have been taken to the police station
A．being suspected
B．suspecting
C．suspected
D．to be suspected
消防车道边缘距离取水点不宜大于（）。
A．2m
B．2．5m
C．3m
D．3．5m
