更多"Fuels of different qualities may re"的相关试题:
[单项选择]When comparing different fuels for different engines, the ignition quality of diesel fuel oils becomes a less critical consideration as （）
A. the amount of lube oil additives increase
B. piston speeds increase
C. injection pressure decrease
D. engine speeds decrease
[单项选择]Fuels of high quality with their earlier ignitions will cause higher （）pressure in cylinders of a diesel engine.
A. compression
B. maximum
C. rated
D. oil
[单项选择]A substance found in residual fuels which tends to cause exhaust valve corrosion and grooving, is（）
A. carbon
B. vanadium
C. calcium
D. hydrogen
[单项选择]The cetane number rates fuels for diesel engines according to its （）
A. antiknock characteristics
B. ignition qualities
C. rates of vaporization
D. viscosity
[单项选择]All of these alternatives are carbon-based fuels（）molecules are smaller and simpler than those of gasoline.
A. which
B. who
C. what
D. whose
[单项选择]On the other hand, alternative fuels do have（）.
A. drawbacks
B. setback
C. drawer
D. backward
[单项选择]Transverse stability calculations require the use of（）.
A. hog or sag calculations or tables
B. hydrostatic curves
C. general arrangement plans
D. cross-sectional views of the vessel
[单项选择]The Pollution Prevention Regulations require that all oil spills in United States water be reported immediately to the （）.
A. local port authority
B. Corps of Engineers
C. USCoast Guard
D. state pollution board
[单项选择]The regulations require that inspected vessels on an international voyage，other than small passenger vessels，must carry which of the following distress signals on or near the navigating bridge?（）
A. 12 hand red flares
B. 12 rocket parachute flares
C. 12 hand combination flares and orange smoke signals
D. 6 hand red flares，and 6 hand orange smoke signals
[单项选择]The minimum amount of lifesaving equipment required aboard an 85-foot uninspected towing vessel consists of（）.
A. one approved flotation cushion for each person on board
B. one approved life preserver for each person on board and one life ring
C. one approved inflatable vest for each person on board
D. lifeboat capacity equal to 1 1/2 times the number of persons on board
[单项选择]Regulations require certain records to be retained on board for at least 3 months after a ship is involved in a casualty or until advised that they are no longer needed on board by the （）.
A. owner
B. Master
C. person in charge
D. Officer in Charge，Marine Inspection
[单项选择]Oil Pollution Regulations require any transfer or discharge of oil or oily mixtures to be recorded in the （）
A. bridge log
B. Master’s log
C. engine room log
D. oil record book
[单项选择]Which pump installation would require an external source of sealing water?（）
A. Main circulator pump jacket water cooling
B. Salt water service pump
C. Auxiliary condensate pump
D. Bilge pump
[单项选择]Regulations require that tankers handling grade B liquids shall have their cargo pumps separated from all sources of vapor ignition by（）.
A. cofferdams
B. empty cargo spaces
C. gas tight bulkheads
D. areas equipped with power ventilation
[单项选择]Regulations require that tank vessels handling grade B liquids shall have their cargo pumps separated from all sources of vapor ignition by（）.
A. cofferdams
B. empty cargo spaces
C. gas tight bulkheads
D. areas equipped with power ventilation
[单项选择]Regulations require that pumprooms on tank vessels carrying grade C liquid cargo with machinery spaces below the freeboard deck be ventilated with（）.
A. power ventilation
B. gooseneck vents and flame screens
C. at least two ducts extending to the weather deck
D. a vent header system
[单项选择]Regulations require that cargo tanks carrying grades D or E liquids on tank barges be vented with（）.
A. gooseneck vents and flame screens
B. pressure-vacuum relief valves
C. branch vent lines and a vent header
D. forced draft blowers
[单项选择]Pollution regulations require that each scupper in an enclosed deck area have a（）.
A. wooden plug
B. soft rubber plug
C. two-piece soft patch
D. mechanical means of closing
[单项选择]Lifesaving regulations require that a fire drill include（）.
A. starting the fire pumps
B. checking the operation of watertight doors
C. checking arrangements for abandon ship
D. All of the above
