轿车前挡立柱上部中度变形需整形，以下哪些项目是规范修理流程中所需的？（）
A.吊发动机
B.清理前挡
C.拆仪表台
D.拆内顶棚
参考答案：B, C, D
—Could you please tell me ________?
—Sorry, I don't know. I was not at the meeting. [ ]
A. what the headmaster says at the meeting
B. what the headmaster said at the meeting
C. what does the headmaster say at the meeting
D. what did the headmaster say at the meeting
通信设备供电可采用的方式有（）
A.独立的通信专用直流电源系统
B.柴油发电机
C.厂站直流系统逆变
D.蓄电池
