GB601标准中规定,标准溶液的标定应两人各作四平行。()
A. 正确
B. 错误
蓄电池箱可能含有爆炸性气体,在蓄电池附近须防止(),禁止明火。
A. 爆炸伤害
B. 火灾伤害
C. 气体伤害
D. 窒息伤害
A diesel driven emergency generator is prevented from being paralleled with the ships service generators by ()
A. an electrical interlock system
B. an automatic paralleling trip switch
C. the synchronizing oscilloscope
D. the reverse current relay
擦法的要领是手掌紧贴皮肤,直线单向移动,动作平稳,用力均匀,不宜过快,使皮肤产生热量。
A. 正确
B. 错误