The type of extinguisher which should be used for an electricity fire is().
A、foam or soda acid
B、dry chemical or foam
C、carbon dioxide or dry chemical
D、carbon dioxide or foam
A、foam or soda acid
B、dry chemical or foam
C、carbon dioxide or dry chemical
D、carbon dioxide or foam
A、The type of application used on the network B、The type of system bus used by the computers C、The type of memory installed in each computer D、The type of media used in the network topology E、The type of protocols used in the network F、The physical layout of the network hosts
A、stuffing box diameter B、direction of rotation of the screws C、pitch of the screws D、type of driving gears
A、two rockets,one of which shall be the buoyant type B、three rockets,one of which shall be the buoyant type C、four rockets,two of which shall be the buoyant type D、five rockets,two of which shall be the buoyant type
A、A.of the diaphragm type B、B.of the centrifugal type C、C.of the positive displacement type D、D.independently driven by electric motors
A、the type of coolant B、the design of the engine C、the type of fuel to be burned D、B and C
A、experience from practice B、various types of cargoes C、different types of ships D、personal abilities
A、experience from practice B、various types of cargoes C、different types of ships D、personal abilities
A、The basic types of paint used on a ship are primer, undercoat and topcoat. B、The basic types of paint used on a ship are topside paint, undercoat and top coat. C、The basic types of paint used on a ship are boottopping, topside and undercoat. D、The basic types of paint used on a ship are cement wash, undercoat and topside.
A、A.inflatable buoyant apparatus type B、B.buoyant apparatus type C、C.life float type D、D.Any of the above types are acceptable