更多"When in operation, it is unavoidabl"的相关试题:
[单项选择]Which operation should be done when launching an inflatable liferaft by hand?（）
A. Open the liferaft casing
B. Turn the valve on the CO2 cylinder to start inflation
C. Make sure the operating cord is secured to the vessel before throwing it over the side
D. After inflation，detach operating cord from liferaft
[单项选择]When there are small differences between the heights of two successive high tides or two successive low tides，the tides are called（）.
A. Diurna
B. Semi-diurnal
C. Solar
D. Mixed
[单项选择]A capsized small sail vessel is best righted when what part of the vessel is downwind?（）
A. Stern
B. Bow
C. Centerboard
D. Mast
[单项选择]In small-angle stability，when external forces exist，the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the（）.
A. center of gravity
B. center of flotation
C. metacenter
D. metacentric height
[单项选择]When the refrigeration demand is small,（）
A. the expansion valve will move toward the wide open position
B. the expansion valve will move toward the closing position
C. the feeler bulb will conveys the high temperature
D. the superheat degree will raise
[单项选择]When a vessel navigates in an area with a small underkeel clearance but with adequate space to take avoiding action she（）.
A. should not be regarded as a vessel constrained by her draught
B. should be regarded as a vessel constrained by her draught
C. shall be regarded as a vessel restricted in her ability to maneuver
D. should be regarded as a non-displacement vessel
[单项选择]When the steering gear is in operation, you should （）.
A. check hydraulic oil levels every hour
B. check the rams for overheating
C. check for excessive oil leakage from rams
D. drain water from telemotor cylinders each watch
[单项选择]When loading a container vessel，the operation is basically that of vertical loading. The important factors to be considered when loading containers are port of discharge，（）.
A. available dunnage，and chocking
B. crushability，and inherent vice
C. sweat，and weight
D. weight，and refrigeration
[单项选择]When anchoring a small sailing vessel in rough weather，the best anchor line would be composed of（）.
A. chain-wire
B. chain-manila
C. chain-nylon
D. all chain
[单项选择]The type of joint formed when a third small plate is riveted over two plates butted together is called a（）.
A. butted joint
B. lap joint
C. strap joint
D. stringer joint
[单项选择]Your vessel is taking on fuel oil when a small leak develops in the hose and you have ordered the pumping stoppedBefore resuming pumping，you should（）.
A. notify the terminal superintendent
B. place a large drip pan under the leak and ping the scuppers
C. repair the hose with a patch
D. replace the hose
[单项选择]Unless it is unavoidable do not jump from a place higher than 5 meters into the water． Try to minimize the shock of sudden cold immersion． When should the said caution be taken into account?（）.
A. The mariners try to put out fire on board of vessel
B. The people on board try to survive themselves from a ship in perils
C. The salvors take actions to rescue the survivors at sea
D. The pilot come on board from his boat in bad weather
[单项选择]A piece of small stuff (small line) secured to an object to prevent it from going adrift is a（）.
A. lanyard
B. keeper
C. noose
D. stopper
[单项选择]The satisfactory operation of diesel engine exhaust valves usually depends on（）
A. the proper back pressure
B. the cooling water temperature
C. correct timing and proper seating
D. accurate metering and the exhaust temperature
[单项选择]The operation of paralleling two alternators requires the voltages to be （）and also in phase.
A. zero
B. eliminated
C. different
D. equal
[单项选择]Which statement concerning the operation of radar in fog is TRUE?（）
A. Radar ranges are less accurate in fog
B. Navigation buoys will always show up on radar
C. A sandy beach will show up clearer on radar than a rocky cliff
D. Small wooden boats may not show up on radar
[单项选择]Faulty operation of diesel engine fuel injection nozzles can be a direct cause of（）.
A. excessive fuel nozzle holder cooling
B. sediment in the fuel supply
C. distortion of the fuel spray pattern
D. improper atomization of the fuel
[单项选择]Defense plans may cause the operation of electronic aids to navigation to be suspended with （）.
A. no notice
B. one day's notice
C. a week's notice
D. thirty (30) days notice
