A.two knock
B.three knocks
C.four knocks
D.five knocks
您可能感興趣的試卷
你可能感興趣的試題
A.fire fighting
B.leakage blocking
C.abandon ship
D.integration
A.the emergency lighting system for muster and abandon ship
B.air oil emergency shut-down
C.ME emergency operation
D.main auxiliary steering gear changing
A.the chief engineer leaves the engineer room with the engine room log book at first
B.releasing compressed air in the air receiver and closing the watertight door
C.stopping all the running machineries and electric devices
D.closing the quick-closing valves of all the oil tanks, stopping the boiler and releasing gas
A.4
B.3
C.2
D.1
A.must connect the bilge well suction directly
B.should not pump out the water accumulated in the cargos
C.should not used for emergency drainage in case of ship collision
D.should connect to the fire fighting system directly
最新試題
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?（）
Which of the following items don’t belong to dock repair works?（）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Using a file without a handle may result in （）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
The condensers located in various stages of a flash evaporator are cooled by（）
（） is not installed on the main switchboar.
The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.