單項(xiàng)選擇題There is a drilling rig established()position 24.1E 25.2N.

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


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1.單項(xiàng)選擇題If passengers are on board when an abandon ship drill is carried out,they should().

A.take part
B.watch
C.go to their quarters
D.stay out of the way and do what they want

2.單項(xiàng)選擇題Which statement is TRUE about nylon line?()

A.Manila line will usually last longer than nylon line
B.Nylon line is excellent for use in alongside towing
C.A normal safe working load will stretch nylon line 50%
D.Nylon stoppers should be used with nylon line

4.單項(xiàng)選擇題The term PROLONGED BLAST refers to().

A.a blast of from five to seven seconds' duration
B.a blast of from five to six seconds' duration
C.a blast of from four to six seconds' duration
D.a blast of from six to seven seconds' duration

5.單項(xiàng)選擇題Which statement is TRUE concerning radiotelephones on board towing vessels?()

A.There cannot be a radiotelephone located anywhere except in the wheelhouse
B.The officer in charge of the wheelhouse is considered to have the radiotelephone watch
C.Only distress messages may be transmitted over channel 13
D.Only the Master of the vessel is allowed to speak over the radiotelephone

6.單項(xiàng)選擇題Which method of adjusting mooring lines is MOST useful for leaving a boat free to rise and fall with the tide?()

A.Crossing the spring lines
B.Slacking all forward running lines while keeping all after running lines taut
C.Doubling up on spring or breast lines
D.Slacking bow and stern lines

7.單項(xiàng)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

8.單項(xiàng)選擇題In the International Code of signals,a group of three letters indicates().

A.urgency or an emergency
B.the vessel's national identity signal
C.a group from the general signal code
D.a group from the medical signal code

9.單項(xiàng)選擇題Good anchorage may be obtained anywhere in this water area,the bottom being generally mud and sand,vessel may have().

A.good getting ground
B.good holding ground
C.good grabbing ground
D.good handling ground

10.單項(xiàng)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