單項選擇題When carrying a cargo of asphalt or molten sulfur，which are carried at temperatures of over 300°F，one of the biggest dangers is（）.

A.water in the tanks or pipelines
B.having the cargo too cool
C.explosion of vapors after discharge
D.inadequate ullage space


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1.單項選擇題When cargo aboard a jack-up in transit becomes adrift，the tow vessel should be asked to （）.

A.turn into the seas
B.turn to be parallel to the seas
C.reduce speed
D.increase speed

2.單項選擇題When accepting vehicles for shipment，the Master should ensure that（）.

A.all decks intended for the stowage of vehicles are，in so far as is practicable，free from oil and grease
B.the ship has on board an adequate supply of cargo securing gear，which is maintained in sound working condition
C.vehicles are in apparent good order and condition suitable for sea transport，particularly with regards to securing
D.All of the above

3.單項選擇題To “shore up” the main deck for the stowage of deck cargo means to（）.

A.weld pad eyes on deck in proper position to secure the cargo
B.strengthen the main deck by placing pillars underneath it in the tween-decks
C.distribute the weight of the cargo by placing fore-and-aft planks on the main deck
D.package the cargo in wooden crates so it will not damage the deck

4.單項選擇題The valve on the discharge side of a cargo pump on a tank vessel will usually be a（）.

A.butterfly valve
B.spectacle valve
C.check valve
D.globe valve

5.單項選擇題The terms “cant frame” and “counter” are associated with the vessel’s（）.

A.cargo hatch
B.forecastle
C.steering engine
D.stern