电机车运行中严禁采用()方法停车。
A.机械制动
B.电气制动
C.打倒车
参考答案:C
. When foreign people talk about the cities of China, the first ______ comes into their mind is Beijing.
A.city
B.one
C.that
D.scene
无人看守道口警标式样是正面为黄底黑色火车头图案的等边三角形。()