A. 进入气柜内作业人员不能携带火种 B. 气柜内部作业安全,可不必携带联络工具 C. 进入气柜内部作业应配备空气呼吸器
A. changing the angle of the tilting plate B. changing the speed of the pump C. moving the slide block and rotor D. moving the shaft trunnion block
A. 正确 B. 错误