When fighting an electrical fire, you should first ().
To repair a small electrical motor that has been submerged in saltwater, you should ().
The unit of electrical resistance is the ()
Which extinguishing agent is the best for use on electrical fires?()
CO2 and Halon extinguishers are used for electrical fire, as well as ()fire.
In an alternating current electrical system, a low system power factor is a direct sign of ()
Before any work on electrical or electronic equipment is performed, which of the following precautions should be carried out ()
It is well known that the whole power distribution of the ship’s electrical services mainly depend on the().
The unit of electrical power is the ()
It is well known that the whole power distribution of the ship’s electrical services mainly depend on the().