下载APP
举一反三
【单选题】下列关于燃气发电机检查维修说法错误的是（）。
A.
检查冷却水位时在拆下压力盖前，先释放冷却系统中的压力
B.
检修排气系统时禁止触碰发热发动机部件，发动机和排气系统元件在运转过程中将变得非常热
C.
运行时检修发电机组应首先检修发电机的皮带等传动部件
D.
断路可能导致人身伤害和/或设备损坏，进行调试或者维修时，禁止使用工具或者戴有首饰触碰电气连接
【单选题】Some pessimistic experts feel that the automobile is bound to fall into disuse. They see a day in the not-too-distant future when all autos will be abandoned and allowed to rust. Other authorities, ho...
A.
How to render automobiles pollution-free.
B.
How to make smaller and safer automobiles.
C.
How to solve the problem of traffic jams.
D.
How to develop an automated subway system.