更多"The use of sinking and dispersing c"的相关试题:
[单项选择]The use of sinking and dispersing chemical agents for removal of surface oil is（）.
A. the most common method
B. too expensive for common use
C. generally safe to sea life
D. authorized only with prior approval of the governmental On-Scene Coordinator
[单项选择]The use of sinking and dispersing agents for the removal of surface oil is （）.
A. the most common method used in the United States
B. too expensive for common use
C. generally safe to sea life
D. generally harmful to sea life
[单项选择]On a bulk chemical carrier，water should NOT be used as an extinguishing agent to fight a fire if the water may come into contact with the chemical called（）.
A. acrylic acid
B. benzene
C. oleum
D. vinyl toluene
[单项选择]In cleaning up an oil spill, the use of chemical agents would （）.
A. absorb the oil for easy removal
B. remove the oil from the water
C. disperse or dissolve the oil in the water
D. not affect the oil
[单项选择]Your ship is sinking rapidly. A container containing an inflatable liferaft has bobbed to the surface upon functioning of the hydrostatic release. Which action should you take?（）.
A. Cut the painter line so it will not pull the liferaft container down
B. Swim away from the container so you will not be in danger as it goes down
C. Take no action because the painter will cause the liferaft to inflate and open the container
D. Manually open the container and inflate the liferaft with the hand pump
[单项选择]An ocean tow is sinking in deep water. Attempts to sever the towing hawser are unsuccessful. Which action should now be taken? （）
A. Abandon the towing vessel
B. Radio for emergency assistance
C. Slip the towline and allow it to run off the drum
D. Secure all watertight openings on the towing vessel
[单项选择]A (n) （） is a chemical or electro-chemical attack on the metal surface which may be further increased if the sea-water is polluted.
A. erosion
B. corrosion
C. cavity
D. scouring
[单项选择]In case of accidents（）the risk of sinking，all effective measures shall be taken to steer clear of the fairway to avoid（）the traffic.
A. involving／impeding
B. involved／to impede
C. involving／to impede
D. involved／impeding
[单项选择]Some refrigeration systems have chemical moisture indicators installed in conjunction with the sight glass in the liquid lineIf excess moisture is present in the system, the indicator will （）
A. activate the driers
B. change color
C. secure the compressor
D. add a predetermined amount of liquid drier
[单项选择]Fire extinguishing agents used on Class C fires must be（）.
A. able to absorb heat
B. water based
C. nonconducting
D. nontoxic
[单项选择]Which of the listed extinguishing agents is NOT suitable for fighting a liquid paint fire?（）
A. Dry chemical
B. Foam
C. Water
D. Carbon dioxide
[单项选择]Which of the fire extinguishing agents listed is the safest to use when combating a class C fire?（）
A. CO2
B. Foam
C. Water fog
D. Soda acid
[单项选择]0f all the extinguishing agents listed below, which one has the greatest capacity for heat adsorption?（）.
A. Water fog
B. Carbon dioxide
C. Dry chemical
D. Solid stream of water
[单项选择]A portable dry chemical fire extinguisher discharges by（）.
A. gravity when the extinguisher is turned upside down
B. pressure from a small CO2 cartridge on the extinguisher
C. air pressure from the hand pump attached to the extinguisher
D. pressure from the reaction when water is mixed with the chemical
[单项选择]Dry chemical extinguishers extinguish class B fires to the greatest extent by（）.
A. cooling
B. smothering
C. oxygen dilution
D. breaking the chain reaction
[单项选择]According（）travel agents, the growth trend in travel is the half-week sneak-away built around a weekend.
A. at
B. on
C. to
D. in
[单项选择]Dry chemical fire extinguishers are effective on which type(s) of fire?（）
A. Burning oil
B. Electrical
C. Paint
D. All of the above
