單項選擇題If a hydraulic pump on a winch accidentally stops while hoisting,the load will stay suspended because().

A.a check valve will close that prevents reverse circulation
B.a centrifugal counterweight counteracts the force of gravity
C.the electric pump motor cut out
D.the control lever will move to the stop position


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1.單項選擇題If a spill occurs,where would you log it?().

A.Oil record book
B.Bell book
C.Smopth logbook
D.Official logbook

2.單項選擇題If a vessel list to port,the center of buoyancy will().

A.move to port
B.move to starboard
C.move directly down
D.stay in the position

3.單項選擇題If heavy smoke is coming from the paint locker,the first firefighting response should be to().

A.release the CO fiooding system
B.open the door to evaluate of the fire
C.enter and use a portable extinguisher
D.secure the ventilation

4.單項選擇題If not attached to the nozzle,each low-velocity spray applicator on a vessel must be stowed().

A.in a protected area on the main deck
B.inside a machinery space near the entrance
C.next to the fire hydrant to which the fire hose is attached
D.on a rack inside the quarters near the entrance