检漏继电器的作用有()
A、漏电时迅速切断电源
B、当人体接触带电物体时迅速切断电源
C、可不间断地监视保护电网的绝缘状态
D、补偿电容电流
参考答案:A, B, C, D
— No one answered when I phoned this morning. Where were you?
— I for teeth in the dental clinic.
A.was being treated
B.have been treated
C.was treated
D.treated
颈外静脉输液适应证应除外()
A.周围循环衰竭需测量中心静脉压
B.临时放入心内起搏器
C.长期滴注高浓度、刺激性强的药物
D.不能进食,需供给肠道外高营养者
E.长期输液周围静脉不易穿刺