更多"The flash point of a petroleum prod"的相关试题:
[单项选择]A petroleum liquid has a flash point of 135°Fahrenheit. This liquid is classed as a grade （）.
A. B flammable liquid
B. C flammable liquid
C. D combustible liquid
D. E combustible liquid
[单项选择]A petroleum liquid has a flash point of 85°F. This is a grade （）.
A. B flammable liquid
B. C flammable liquid
C. D combustible liquid
D. E combustible liquid
[单项选择]A decrease in the flash point of diesel engine lube oil indicates the lube oil has become （）.
A. contaminated with sludge
B. contaminated with carbon
C. diluted with fuel oil
D. diluted with water
[单项选择]The flash point of a liquid refers to the temperature （）
A. at which a liquid will give off inflammable vapors
B. at which a liquid will burn steadily
C. at which a liquid will explode
D. that a liquid must reach before it will flow readily
[单项选择]The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated （）
A. for atomizing
B. for centrifuging
C. in a storage tank
D. in the re-circulating line
[单项选择]A notice of readiness is not valid unless it indicates that the vessel is ready to load or discharge as the case may be，at the time（）it is given.
A. when
B. which
C. that
D. then
[单项选择]A vessel sounds one short blast. This signal indicates the vessel（）.
A. intends to alter course to starboard
B. intends to pass starboard to starboard
C. is altering course to starboard
D. intends to pass port to port
[单项选择]The ignition quality of a diesel fuel oil is indicated by the （）
A. specific gravity
B. cetane number
C. viscosity
D. calorific valve
[单项选择]A buoy with a composite group-flashing light indicates a(n)（）.
A. anchorage area
B. fish net area
C. bifurcation
D. dredging area
[单项选择]As for a oil-fired boiler too much air would indicated by （）.
A. yellowish flame
B. golden yellow flame
C. milky flame
D. brilliant white flame
[单项选择]The American Petroleum Institute recommends magnetic particle inspection for（）.
A. anchor chain
B. wire rope
C. connecting links
D. pendant wires
[单项选择]The American Petroleum Institute recommends that connecting links and anchor shackles be inspected using（）.
A. visual examinations
B. magnetic particle inspection
C. dye penetrant inspection
D. x-ray inspection
[单项选择]The primary hazard of liquefied petroleum gas and liquefied natural gas is（）.
A. pressure
B. toxicity
C. temperature
D. flammability
[单项选择]Which of the petroleum products listed has the lowest flash point?（）
A. Hydraulic oil
B. Lubricating oil
C. Diesel oil
D. Refrigeration oil
[单项选择]Petroleum cargo tanks should not be topped off at deck level when loading on a cold day because（）.
A. a subsequent temperature rise will cause the cargo to overflow
B. air pockets may cause the cargo to bubble out of the ullage hole
C. the increased viscosity of the product requires higher loading pressure which increases the chances of a spill
D. the tank valve may be stiff and a spill will occur before the valve can be closed
[单项选择]The weight of liquefied petroleum gas vapors as compared to air is（）.
A. variable
B. the same
C. lighter
D. heavier
