井下电机车的传动装置均为一级齿轮减速。
参考答案：错
We all voted for you in the election. Therefore, you must keep in mind whom you __________ in the
state government. [ ]
A. preserve
B. greet
C. advance
D. represent
当飞机在地面且一台发动机运转时CVR是否工作？（）
A、是
B、否
