一级保养中的电气作业包括检查灯光、喇叭、各种仪表。
参考答案：对
I can’t think why he that; it was my fault.
A．would have said
B．should have said
C．ought to have said
D．might have said
电话调查的特点是（）。
A.时效快，费用省
B.可用于调查较敏感的问题
C.问卷可不用设计
D.调查资料较为准确
