更多"（） or air venting arrangement is fi"的相关试题:
[单项选择]Air chambers are usually fitted to reciprocating pumps in order to （）.
A. increase discharge pressure
B. increase suction vacuum
C. develop pulsation flow
D. keep a steady rate of flow
[单项选择]The air reservoirs must have （） fitted to prevent rupture in the event of fire.
A. high pressure alarm
B. fire alarm
C. extinguishers
D. fusible plugs
[单项选择]Insufficient end clearance on newly fitted piston rings in a diesel enginewill cause the rings to（）
A. jam in the most worn part of the cylinder when the rings expand
B. break in the most worn part of the cylinder when the rings expand
C. wear eccentrically on the side opposite the end gap
D. overheat and jam at the top center on the combustion stroke
[单项选择]Preventer bars are fitted on lifeboat releasing hooks to prevent（）.
A. the falls from unhooking if the releasing gear is operated accidentally while the boat is being lowered
B. operation of the release lever until the boat is waterborne
C. the falls from rehooking after they have been released
D. accidental unhooking when the falls become slack
[单项选择]Most hydraulic steering gears are fitted with relief valves which（）
A. function when the rudder is amidships
B. relieve excess whip pressure from the hydraulic oil system
C. protect the piping assembly from external rudder shock
D. relieve excessive telemotor pressure
[单项选择]Some diesel engines are fitted with a thermometer in the cooling water outlet from each cylinderIf the cooling water temperature from all cylinders begins to rise above normal, you should suspect （）
A. increase blow-by in all cylinders
B. incomplete combustion in all cylinder
C. overloading in all cylinders
D. insufficient fuel delivery to all cylinders
[单项选择]Which tackle arrangement has the LEAST mechanical advantage（）.
A. Single whip
B. Gun tackle
C. Luff tackle
D. Twofold purchase
[单项选择]If your passenger vessel is fitted with a loudspeaker system，it must be tested at least once （）.
A. every week
B. a day
C. every trip
D. a watch or once a trip，whichever is shorter
[单项选择]Battens are fitted in cargo holds across the frames of the vessel from the turn of the bilge upward. The purpose of these cargo battens is（）.
A. for securing a snatch block when snaking cargo into the wings of the hold
B. to prevent cargo from coming in contact with the vessel's frames or shell plating
C. to provide fittings to which cargo lashings may be secured
D. to support the dunnage floors which are laid down between tiers of cargo
[单项选择]All bilge suctions must be fitted with suitable （）, which in the machinery space would be mud boxes positioned at floor plate level for easy access.
A. strangers
B. relief valves
C. emergency valves
D. strainers
[单项选择]A warp end may be fitted for operating the derrick topping wire which adjusts the derrick （）.
A. length
B. slack
C. height
D. rotation direction
[单项选择]Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
A. a dummy antenna
B. a supporting facilities
C. a back-up equipment
D. an antenna
[单项选择]The （）is fitted on an oily water separator.
A. sliding bowl bottom
B. gravity disc
C. bowl
D. liquid level detector
[单项选择]A wooden plug fitted tightly in the vent of a damaged tank may prevent the tank from（）.
A. filling completely
B. developing free surface
C. developing free surface moment
D. collapsing
[单项选择]A vessel is not in every way fitted for cargo service（）at the time of her delivery to the charterers her engine room staff is incompetent and inadequate，and accordingly she is unseaworthy.
A. whether
B. should
C. shall
D. if
[单项选择]Compressed air is supplied by air compression to （）.
A. the air receivers
B. the starting valves
C. the cylinder covers
D. the distributors
[单项选择]A vessel fitted with twin screws is easier in（）than a vessel with single screw.
A. turning maneuver
B. course setting
C. position fixing
D. regulating speed
[单项选择]In a ordinary cargo crane, （） is fitted to rotate the crane.
A. the slewing motor
B. the lulling motor
C. the hoisting motor
D. none of the above
[单项选择]Because of the arrangement of the cell guides，the MOST important factor while loading containers is the（）.
A. contents of the container
B. list of the vessel
C. size of the shoreside crane
D. weight of the container
