如图是方向、地点标志。
参考答案:对
It was a long journey, but ______ of them four felt bored. [ ]
A. neither
B. both
C. none
D. all
OFT的过程是()。
A、关闭所有油角阀;
B、关闭所有油枪的吹扫阀;
C、停止点火并退所有点火枪;
D、关闭燃油供油、回油快关阀。