單項選擇題Your vessel is approaching a bend. You hear a prolonged blast from around the bend. You should （）.

A.back your engines
B.stop your engines and drift
C.answer with one prolonged blast
D.sound the danger signal


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1.單項選擇題In most cases，when a large merchant vessel enters shallow water at high speed the（）.

A.maneuverability will increase
B.speed will increase
C.bow will squat farther than the stern
D.vessel will rise slightly，on a level plane

2.單項選擇題When pushing ahead，wires leading from the quarters of the after outboard barges to the bow of a towboat（）.

A.prevent the towboat from sliding when the rudder is moved
B.prevent the barges from spreading out when backing down
C.hold the towboat securely to the barges
D.prevent the sidewise movement of the face barges

3.單項選擇題A vessel which is being assisted by an icebreaker would display a flag hoist consisting of the code numeral 4 when the vessel（）.

A.speed begins to drop
B.stops
C.receives ice damage
D.becomes icebound

5.單項選擇題On a single-screw vessel the stern frame（）.

A.furnishes support to the rudder，propeller shaft，and transom frame
B.provides foundations for after mooring winches
C.provides foundations for the main propulsion engines
D.transfers the driving force of the propeller to the hull