单项选择题
How do you treat someone suffering from electrical shock after you secure the source?（）
A.check for respiration
B.check for pulse
C.treat for shock
D.All of the above
点击查看答案&解析
相关考题
-
单项选择题
Tools with （）handles should be used to check electric circuit.
A.plastic
B.metal
C.stainless steel
D.copper -
单项选择题
Before doing maintenance on electrical equipment, you should （）.
A.turn off power first
B.turn on power first
C.with a test pen in hand
D.tell C/E -
单项选择题
While the parallel operation, （） must be used.
A.ammeter
B.voltmeter
C.synchroscope
D.A+B+C
