东风4机车上冷却风扇的最高转速是:()r/min。
A.1200
B.1150
C.2500
参考答案:B
A.分子在不停运动
B.乌云遮住月亮
C.树木在不断生长
D.气温上升
Please use()for().
A.English/all distress communications
B.Chinese/some distress calls
C.the language decided by Administration/all distress calls
D.Japanese/some distress alerts