An electrical fire should be put out by dry powder. ()
How do you treat someone suffering from electrical shock after you secure the source?()
A switchboard, for a AC electrical distribution system, will be provided with which of the following components ().
Electrical circuits are protected against overheating by means of a/an ().
An electrical device which prevents an action from occurring until all other required conditions are met is called a/an ().
The part of the shipboard electrical system used to control the distribution of power to the branch circuits, is the ().
()extinguish oil and electrical fires with water.
Electrical power is expressed in ()
Which of the listed fire extinguishers is recommended for use on an electrical switchboard fire?()
可引起ESES(electrical status epilepticus during sleep)的药物是( )。