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【单选题】
将调速手柄回“ 0 ”位,方向手柄置“ 0 ”位。
A.
Put the speed handle back to the "0" position, and put the reversing handle to the "0" position.
B.
Press the red emergency brake button (conductor's valve) on the left cabinet of the operating console to implement emergency braking.
C.
Operate pantograph toggle switch to "drop" position and pantograph drop.
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【单选题】After the birth of my second child，I got a job at a restaurant.Having worked with an experienced 16for a few days，I was 17to wait tables on my own.All went 18that first week.When Saturday night came，I...
A.
repeated
B.
discovered
C.
corrected
D.
described