in
on
at
for
第1题：
A jack-up drilling unit elevated on the Outer Continental Shelf must have a fog horn that will sound ______.
A.a 2-second blast every 20 seconds
B.a 4-second blast every 20 seconds
C.an 8-second blast every 30 seconds
D.a 10-second blast every 30 seconds
第2题：
Acknowledgement by you of receipt of a distress message from a vessel which，beyond any possible doubt，is not in your vicinity and is a long distance away must be made when ______．
A.vessels nearer the distress vessel acknowledge receipt
B.vessels nearer the distress vessel fail to acknowledge receipt
C.even you have not received the distress
D.even the vessel in distress expressly prohibit you from providing any salvage service
第3题：
On which vessels is GMDSS required?______.
A.All vessels capable of international voyages
B.Vessels operating outside of the range of VHF coastal radio stations
C.SOLAS Convention ships of 300 gross tonnage or more
D.Coastal vessels of less than 300 gross tons
第4题：
In which case would an overtaking vessel sound a whistle signal of two prolonged followed by one short blast? ______.
A.When overtaking in restricted visibility
B.When overtaking in a narrow channel
C.When overtaking on open waters
D.When no other vessels are in the immediate area
第5题：
A vessel proceeding along a narrow channel shall ______.
A.avoid crossing the channel at right angles
B.not overtake any vessels within the channel
C.keep as near as safe and practicable to the limit of the channel on her starboard side
D.when nearing a bend in the channel, sound a long blast of the whistle
第6题：
MV ATLANTIC AT 0205UTC A BLACK FLOATING MINE WAS SIGHTED IN APPROX POSITION LAT 15.30N LONG 112.30E DANGEROUS TO NAVIGATION VESSELS IN VICINITY. According to this cable，the mine ______.
A.has nothing to do with navigation
B.dangerous to navigation
C.the mine is drifting with the wind
D.the mine is not sighted by the vessel
第7题：
The following conditions，except ______，require that vessels be towed through the entire Canal．
A.vessels without mechanical motive power
B.vessels with disabled machinery or bad steering
C.vessels with dangerous cargoes on board
D.vessels liable to become unmanageable for any other reason
第8题：
Calling to a bully’s parent _____.
［A］ has long existed but changed its content ［B］ is often done with careful thinking
［C］ often leads to blaming and misunderstanding ［D］ is used to warn the child not to do it again
第9题：
If you hear more than six short blasts and one long blast of the whistle supplemented by the same signal on the general alarm, you should ______.
A.start the fire pump
B.go to your man overboard station
C.go to your lifeboat station
D.stand by for collision
第10题：
当WEU上的一个电源组件失效时:（）