A.deteriorate and give off noxious gasses
B.spontaneously heat and catch fire
C.attract lice and other vermin and serve as a breeding ground
D.None of the above
您可能感興趣的試卷
你可能感興趣的試題
A.fire-main system
B.feed-water system
C.freshwater sanitary system
D.domestic water tank
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.the cap should be removed to drain the boat when it is waterborne
B.the cage must be free of rubbish or the ball may not seat properly
C.there is an automatic ball check located in a siphon tube
D.the small lever to release the rubber ball float must be turned counterclockwise
A.Frapping line
B.Tricing line
C.Rottmer release
D.Winch remote control wire
A.the mess room
B.each lifeboat
C.each industrial work site
D.each fire station
最新試題
In launching a covered lifeboat，what would safely lower the lifeboat from inside the lifeboat cabin?（）
Frapping lines are fitted to lifeboat davits to（）.
Each lifeboat must be lowered and maneuvered in the water at least once every（）.
The connection facilities for the international shore connection must be located to provide access（）.
On a small boat，which knot is best suited for attaching a line to the ring of an anchor?（）
On a ship，a fixed carbon dioxide or other approved system must be installed（）.
On a ship，watertight doors should be operated（）.
On a ship，a cabinet or space containing the controls or valves for the fixed firefighting system must be（）.
Line throwing apparatus aboard ship must contain（）.
How should the lifeboat sea painter be rigged?（）