更多"Which substance is NOT considered t"的相关试题:
[单项选择]Which lubricating oil additive is used in diesel engines to reduce the tendency for sludge and varnish to form on the engine parts?（）
A. Flash point improvers
B. Pour point improvers
C. Inhibitors
D. Foam suppressors
[单项选择]The value of the controlled variable, which under any fixed set of conditions the automatic controller operates to maintain, is known as （）
A. set point
B. control point
C. deviation
D. offset
[单项选择]What is the substance called which can readily be converted from a liquid into a vapor, and also from a vapor into liquid with a reasonably narrow range of pressure?（）
A. Refrigerator
B. Refrigerant
C. Cooling medium
D. Brine
[单项选择]Which oil is not suitable for use as storm oil?（）
A. Fish oil
B. Vegetable oil
C. Mineral oil
D. Animal oil
[单项选择]A fire is considered "under control" when （）.
A. all hands are at their fire stations
B. all fire-fighting equipment is at the scene
C. the fixed systems are activated
D. the fire is contained and no longer spreading
[单项选择]Unless such oil tanker carries crude oil which is not suitable for crude oil washing，the oil tanker shall（）the system in accordance with the requirements of that Regulation.
A. operate
B. check
C. install
D. overhaul
[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 booster pump, which supplies diesel oil to（） , should have a possibility of being powered by compressed air or by emergency power.
A. the main engines
B. the auxiliary engines
C. the emergency generator engine
D. the auxiliary engines and the main engine(s)
[单项选择]Which condition is necessary for a substance to burn?（）
A. The temperature of the substance must be equal to or above its fire point
B. The air must contain oxygen in sufficient quantity
C. The mixture of vapors with air must be within the explosive range
D. All of the above
[单项选择]Which of the following fuel oil characteristics establishes the danger point when transferring, pumping, and firing procedures are concerned?（）
A. Fire point
B. Flash point
C. Specific gravity
D. viscosity
[单项选择]Which cargo is considered volatile（）.
A. Bunker C
B. Turkey-red oil
C. Sweet oil
D. Iso-Propylamine
[单项选择]Which factor must be considered when determining the order of loading of dissimilar products through the same piping system aboard a tanker? （）
A. Contamination of the cargo
B. Flash points
C. Reid vapor pressures
D. Specific gravities
[单项选择]On a tank vessel, which of the following substances would be burning in a class "B" fire?（）
A. Oil
B. Wood
C. Rags
D. Electrical wiring
[单项选择]Which VPN management feature would be considered to ensure that the network had the least disruption of service when making topology changes?（）
A. dynamic reconfiguration
B. path MTU discovery
C. auto setup
D. remote management
[单项选择]Which of the following would be considered downflooding on a fishing vessel as defined in regulation? （）
A. Vessel heels until water enters a hatch
B. Vessel in collision floods through a damaged area above the waterline
C. Vessel takes on water due to the hatches being left open in heavy rain
D. Vessel takes on water by the propeller shaft due to failure of the stern gland
[单项选择]When jumping into water upon which there is an oil-fire，you should（）.
A. break the water surface with your hands when diving head-first
B. use your hands to hold your knees to your chest
C. cover your eyes with one hand while pinching your nose shut and covering your mouth with the other
D. enter the water at the bow or stern on the windward side of the vessel
[单项选择]Which of the listed materials would be considered as a bunting class "C" fire?（）
A. Fuel oil
B. Wood
C. Celluloid
D. Electrical insulation
[单项选择]The （） is a crystal which, under pressure, produces an electric current which varies with the pressure.
A. alternator
B. glass thermometer
C. burdon tube
D. piezoelectric pressure transducer
