更多"Explosive and flammable gasses are "的相关试题:
[单项选择]The explosive range of a mixture of flammable vapors is specified as a percentage of （）.
A. flammable vapor by volume in air
B. oxygen present to support combustion
C. the temperature of the flash point
D. the lower limit of explosibility of the mixture
[单项选择]Which mooring line is likely to undergo the most strain when docking a ship under normal conditions?（）
A. Bow line
B. Breast line
C. Spring line
D. Stern line
[单项选择]The most likely time for oil pollution while bunkering is when（）.
A. final topping off is occurring
B. first starting to receive fuel
C. hoses are being blown down
D. hoses are disconnected and being capped
[单项选择]Combustion knock will most likely occur as a result of using a fuel with（）
A. low ignition quality
B. a high volatility
C. low ignition delay
D. a high cetane number
[单项选择]Cumulonimbus clouds are most likely to accompany a(n)（）.
A. high pressure system
B. cold front
C. warm front
D. occluded front
[单项选择]Which will most likely occur when entering shallow water? （）
A. Rudder action will become more effective
B. The vessel's list will change
C. The vessel's trim will change
D. An increase in speed will occur
[单项选择]Which of the following conditions is most likely to occur when unburned fuel contaminates the crankcase of a diesel engine?（）
A. Lube oil is diluted and its viscosity is reduced
B. Sulfuric acid is formed
C. Bearings become pitted ad immediately fail
D. Valve stems develop sludge deposits
[单项选择]A class "C" fire would most likely occur in the （）.
A. engine room bilges
B. main switchboard
C. paint locker
D. rag bin
[单项选择]Most troubles likely to occur with marine diesel engine can, if located in time, be remedied with no difficulty and many can be （）if the engine is maintained with a high sense of responsibility to the people on the part of the motormen and engineers.
A. found out
B. eliminated
C. avoided
D. lowered
[单项选择]The hydraulic oil most likely to thin out when hot and thick when cold would have a viscosity index of（）
A. 20
B. 40
C. 60
D. 80
[单项选择]A container with high cube would most likely be used to stow（）.
A. dense bulk cargoes
B. household appliances
C. fragile cargoes
D. heavy industrial machinery
[单项选择]The most likely place for a fire to start through the process of spontaneous combustion is in （）.
A. an electrical switchboard
B. the pressure tanks
C. the fuel oil tanks
D. the oily rag bin
[单项选择]Steam fog is most likely to occur on the Mississippi and Ohio Rivers in（）.
A. spring，around late evening
B. spring，around early evening
C. fall，around early morning
D. fall，around midday
[单项选择]The most likely location for a liquid cargo fire to occur on a tanker would be（）.
A. in the pumproom
B. at the vent header
C. at the main deck manifold
D. the midships house
[单项选择]A high cube container would most likely be used to stow（）.
A. dense bulk cargoes
B. household appliances
C. fragile cargoes
D. heavy industrial machinery
[单项选择]What would most likely prevent a SART’s signal from being detected?（）
A. Signal absorption by the ionosphere
B. Heavy sea swells
C. The rescue personnel were monitoring the 10-cm radar
D. The rescue personnel were monitoring the 3-cm radar
[单项选择]关于最可能时间（MOST LIKELY TIME），下列说法正确的是（）
A. 任何事情都顺利的情况，完成某项工作的时间
B. 正常情况下，完成某项工作的时间
C. 最不利的情况，完成某项工作的时间
D. 随机出现的时间
