單項選擇題Which may ignite fuel vapors?（）

A.Static electricity
B.An open and running motor
C.Loose wiring
D.All of the above


您可能感興趣的試卷

你可能感興趣的試題

1.單項選擇題Where would you find the call sign or call letters of the radio station on your ship?（）

A.In the rig safety manual
B.On the Certificate of Inspection
C.On the Ship Station License
D.On the rig Watch Bill

2.單項選擇題To safely anchor a vessel there must be sufficient scope in the anchor cable. Scope is the ratio of（）.

A.weight of cable to weight of vessel
B.weight of cable to weight of anchor
C.length of anchor to depth of water
D.length of cable to depth of water

3.單項選擇題Three SHORT BLASTS mean（）.

A.I am altering my course to starboard
B.I am altering my course to port
C.I am operating astern propulsion
D.I am operating ahead propulsion

4.單項選擇題The winch is liable（）worn-out in this way.

A.getting
B.to get
C.to have got
D.for getting

5.單項選擇題The winch at Hatch No.3 is（）trouble.

A.at
B.in
C.on
D.over