更多"In an automatic mooring winches, th"的相关试题:
[单项选择]The majority of automatic mooring winches are spur geared to improve the backward efficiency of the gear train for rendering（）
A. spur geared
B. screw geared
C. worm geared
D. belt driven
[单项选择]Worm geared automatic mooring winches are （） as the multi-start feature reduces the advantage of worm gear iethe high gear radio.
A. popular
B. common
C. in lead position
D. uncommon
[单项选择]The spur geared mooring winches have advantages over worm geared ones in（）
A. higher efficiency of the gear train while reversing
B. the higher gear ratio
C. the multi-start feature
D. higher recovering speed
[单项选择]Mooring winches are often combined with （） units so that one prime mover drives both.
A. crane
B. hatch cover
C. windlass
D. steering gear
[单项选择]In a combination chain and wire rope mooring system，the anchor chain is deployed at the anchor end of the line to（）.
A. increase fatigue life of the system
B. reduce the time to retrieve the line
C. increase the holding power
D. reduce the catenary
[单项选择]A common class of wire rope used for mooring is the 6x19 class. What does the 6 represent?（）
A. Factor of safety
B. Number of wires per strand
C. Number of strands per wire rope
D. Number of wires in the core
[单项选择]In the constant-tension mooring, the mooring lines holding the ship to the pier will maintain a constant tension even with changes in tide or ship’s draft, （）.
A. without the necessity of manually adjusting the lines
B. without the necessity of automatically adjusting the lines
C. with the necessity of manually adjusting the lines
D. with the un-necessity of automatically adjusting the lines
[单项选择]（）ready for mooring.
A. Do
B. Make
C. Get
D. Got
[单项选择]Electric cargo winches have an overload safety device which normally cuts the current to the winch motor（）.
A. after torque causes line pull to exceed the rated capacity of the winch
B. before the line pull reaches the rated capacity of the winch
C. when the line pull reaches the breaking strength of the fall
D. before the safe working load of the fall is reached
[单项选择]Get everything ready（）mooring．
A. of
B. on
C. to
D. for
[单项选择]The system of derricks and winches has been largely replaced on newer ships by cranes（）it is very efficient.
A. when
B. because
C. unless
D. though
[单项选择]Main steam and exhaust pipes for winches and similar gear shall not pass through crew accommodation nor, whenever technically possible, through alleyways leading to crew accommodation; where they do pass through such alleyways, they shall be adequately （）.
A. ventilated and tagged
B. ventilated and cooled down
C. insulated and encased
D. insulated and warmed up
[单项选择]Connecting elements of a mooring system should be fabricated from（）.
A. cast iron
B. forged steel
C. stainless steel
D. cast steel
[单项选择]These include deck machinery such as mooring equipment, anchor handling equipment, cranes and （）.
A. boilers
B. bow thrusters
C. stabilizers
D. hatch covers
[单项选择]Installing tandem anchors on the same mooring line is referred to as（）.
A. doubling
B. pretensioning
C. piggybacking
D. paralleling
[单项选择]Lifeboat winches on a ship are required to be inspected and an entry made in the logbook. What should this entry include? （）
A. The time required to lower a lifeboat
B. The time required to raise a lifeboat
C. The date of inspection and condition of the winch
D. All of the above
