A.flame retardant
B.moisture resistant
C.oil resistant
D.low conductivity
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A.Ring type
B.Fork type
C.Spade type
D.Push on pull off type
A.metal
B.wood
C.water
D.plastic
A.Stray current
B.Rated current
C.Starting current
D.Earth current
A.pump
B.the cylinder
C.the hunting gear
D.the rudder
A.transmitter
B.receiver
C.pipes
D.charging unit
最新試題
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
Under MARPOL Code the ship to which it applies has to carry （）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
Which of the following items don’t belong to dock repair works?（）
Diesel engine air start system check valves are opened by （）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
The shipboard oil pollution emergency plan will be invalid after （）
（） is not installed on the main switchboar.