更多"A level gauge for a tank is to （）."的相关试题:
[单项选择]When checking the liquid level in a tank, you should position yourself （）.
A. on the windward side of the opening
B. on the leeward side of the opening
C. at a right angle to the wind direction
D. so that the obstruction of your body will protect you from the fumes
[单项选择]The water level in the gauge glass when a boiler is operating is （） when the boiler is shut down.
A. lower than
B. higher than
C. below
D. equal to
[单项选择]The water level showing in a boiler water gauge glass is usually （） during working.
A. higher than the actual drum water level
B. equal to the actual drum water level
C. increasing due to steam condensation in the glass
D. lower than actual drum water level
[单项选择]If the overflow tank high-level alarm sounds while the fuel oil tanks are being topped off, the engineer should （）.
A. close the static leg filling valve
B. close the overflow tank falling valve
C. reduce the fuel oil pumping rate
D. stop the fuel oil pumping operation
[单项选择]If the low level alarm of the diesel fuel day tank fails to function, you can expect trouble from（）
A. overheated injection pumps
B. water condensed in the cylinders
C. fuel dilution of the lube oil
D. air in the fuel system
[单项选择]"gauge pressure" means（）.
A. "vacuum"
B. "the excess of pressure above atmosphere"
C. "figure on a gauge"
D. Any of the above
[单项选择]The pressure difference of the gauge on the oily water separator increases greatly, the reason is（）
A. the filter is clogged
B. bilge suction value is clogged
C. suction value and discharge value of the pump do not open fully
D. screw pump is worn seriously and volumetric efficiency is decreased
[单项选择]The type of gauge most commonly used to measure pressure is the （）.
A. bimetallic type
B. diaphragm type
C. bourdon tube type
D. resistance-temperature type
[单项选择]A compound gauge is typically installed on the （）.
A. suction side of a bilge pump
B. exhaust manifold of an auxiliary diesel
C. discharge line from an air compressor
D. chemical feed tank of an evaporator
[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]Bridge gauge can be used to measure （） of a diesel engine.
A. diameters of journals
B. deflections of crankwebs
C. diameters of crankpins
D. none of the above
[单项选择]You are requisitioning stores for your tank vessel. What type of matches are permitted aboard?（）
A. Phosphorous
B. Safety
C. Self-extinguishing
D. Wooden
[单项选择]On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.
A. hydraulic
B. electric
C. steam
D. diesel
[单项选择]A tank vessel transferring non-flammable hazardous cargo in bulk must display warning signs. These signs must（）.
A. be visible from both sides and from forward and aft
B. indicate NO SMOKING
C. be displayed only while transferring cargo and fast to a dock
D. use black lettering on a white background
[单项选择]Regulations require that cargo pumprooms on tank barges (constructed in 1965) carrying grades B or C liquid cargoes have power ventilation systems which can completely change the air in （）.
A. 1 minute
B. 3 minutes
C. 5 minutes
D. 10 minutes
[单项选择]Approximately what percent of tank space should be left for expansion of oil due to possible temperature increase?（）
A. 1% to 3%
B. 1% to 2%
C. 4%
D. 2% to 4%
[单项选择]The gauge pressure inside a container is -0~5kg/cm2, then what is the absolute pressure exerted to the inside surface of thin container?（）
A. 0~05Mpa
B. 0~95Mpa
C. 1~05Mpa
D. 0~5Mpa
[单项选择]If both the “high level” and “low level” alarms come on for the same address of a centralized control console, the most likely problem is a/an （）.
A. sensor failure
B. failed alarm
C. low level
D. extremely high level
