單項(xiàng)選擇題While cranking out a quadrantal davit，slippage of the quadrant due to excessive wear or failure of the teeth in the quadrant will cause the（）.

A.Davit arm to pivot on the traveling nut and the head to fall outboard
B.Traveling nut to lock up in place on the worm gear
C.Limit switch to engage and hold the traveling nut in position
D.Winch brake to lock in position and prevent lowering the boat


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你可能感興趣的試題

1.單項(xiàng)選擇題Which term refers to a transverse curvature of the deck（）.

A.Deadrise
B.Camber
C.Freeboard
D.Flare

2.單項(xiàng)選擇題Which statement about the hospital space on a cargo ship is TRUE（）.

A.The hospital may be used for disciplinary confinement if it is not being used for treatment
B.The hospital space must have both a bathtub and shower
C.A hospital is required on all vessels with a crew of 12 or more if it makes overnight voyages
D.If a ship has a crew of forty-five who do not have their own room，the hospital must have four berths

3.單項(xiàng)選擇題Which space（s）is（are）deducted from gross tonnage to derive net tonnage（）.

A.Galley fitted with range or oven
B.Open structures
C.Passenger spaces
D.Boatswain's stores

4.單項(xiàng)選擇題Which space（s）is（are）deducted from gross tonnage to derive net tonnage（）.

A.Boatswain's stores
B.Companions and booby hatches
C.Passenger spaces
D.All of the above

5.單項(xiàng)選擇題Which space cannot be deducted from gross tonnage when calculating net tonnage（）.

A.Crew messroom
B.Forepeak ballast tank
C.Master's cabin
D.Chain locker