單項選擇題On the all-purpose nozzle,the position of the valve when the handle is all the way forward is().

A.shut
B.fog
C.solid stream
D.spray


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1.單項選擇題On a vessel carrying grades A,B,C or D cargoes,enclosed spaces where sources of vapor ignition are normally present shall NOT be segregated from cargo tanks by().

A.cofferdams
B.galleys
C.pump rooms
D.tanks used to carry liquids having a flash point of 150°F or above

2.單項選擇題Oil may NOT be transferred unless().

A.there are two certificated tankermen on each vessel
B.the vessel is equipped with constant-tension winches
C.discharge containment equipment (i.e. drip pans) are in place
D.All of the above

3.單項選擇題Of the following,the most important consideration for a tanker is().

A.GM
B.the vertical center of gravity
C.the longitudinal center of gravity
D.the stress on the hull

5.單項選擇題Litmus paste is used in order to determine().

A.innage
B.thievage
C.ullage
D.the tank's datum point