更多"Deficient oxygen content inside a c"的相关试题:
[单项选择]Deficient oxygen content inside a chain locker can be detected with（）.
A. litmus paper
B. a combustible gas indicator
C. an oxygen breathing apparatus
D. an oxygen indicator
[单项选择]What can cause a lack of oxygen in a chain locker（）．
A. Absorption
B. Osmosis
C. Evaporation
D. Oxidation
[单项选择]The perforated，elevated bottom of the chain locker，which prevents the chains from touching the main locker bottom and allows seepage water to flow to the drains，is called a（）.
A. cradle
B. draft
C. harping
D. manger
[单项选择]Before entering the chain locker，you should（）.
A. have someone standing by
B. make sure there is sufficient air within the locker
C. de-energize the windlass
D. All of the above
[单项选择]An oxygen indicator can be used to determine if there is（）.
A. sufficient oxygen in a compartment to support life
B. combustible gases present
C. hydrogen gases present
D. All of the above
[单项选择]After extinguishing a paint locker fire using the fixed CO2 system，the next action is to have the space（）.
A. opened and burned material removed
B. left closed with vents off until all boundaries are cool
C. checked for oxygen content
D. doused with water to prevent reflash
[单项选择]A combination combustible gas and oxygen indicator is an instrument that measures the（） of both combustible gas and oxygen; each is indicated on a separate meter.
A. purifies
B. combinations
C. concentrations
D. filters
[单项选择]Oxygen corrosion in auxiliary boilers is prevented by treating the boiler feed tank with either sodium （）
A. sulfite or hydrazine
B. sulfite or hygroscopic sulfite
C. bromide or hydrazine
D. bromide or hygroscopic sulfite
[单项选择]If heavy smoke is coming from the paint locker,the first firefighting response should be to（）.
A. release the CO fiooding system
B. open the door to evaluate of the fire
C. enter and use a portable extinguisher
D. secure the ventilation
[单项选择]An oxygen indicator will detect （）.
A. concentrations of explosive gas
B. an oxygen deficiency in a space
C. the presence of harmful amounts of carbon monoxide
D. All of the above
[单项选择]The locker will（）as long as your ship is here.
A. Be kept sealed
B. Be released from being sealed
C. Be kept signed
D. Be released from being signed
[单项选择]The minimum amount of oxygen required to support life is（）
A. 14 percent
B. 15 percent
C. 16 percent
D. 17 percent
[单项选择]When checking the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery，the atmosphere must be sampled（）.
A. one meter from the tank bottom and one meter below the tank top
B. one half the ullage of the tank and one meter below the tank top
C. one half the ullage of the tank and one meter above the tank bottom
D. at three meter intervals from the tank top
[单项选择]When measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery，check it（）.
A. one meter from the tank bottom and one meter below the tank top
B. one half the ullage of the tank and one meter below the tank top
C. one half the ullage of the tank and one meter above the tank bottom
D. at three meter intervals from the tank top to the bottom
[单项选择]If the meter needle of the oxygen indicator cannot be set to zero，what should be done? （）
A. Replace the batteries
B. Check the sampling tube for blockage
C. Adjust the final reading by the amount the needle is displaced from zero
D. Replace the platinum filament
