The use of sinking and dispersing chemical agents for removal of surface oil is ______.A.the most common method used in the United StatesB.too expensive for common useC.generally safe to sea lifeD.authorized only with prior approval of the Federal On-Scene Coordinator
The use of sinking and dispersing chemical agents for 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.authorized only with prior approval of the Federal On-Scene Coordinator
相关考题：
In cleaning up an oil spill, the use of chemical agents would______.A.absorb the oil for easy removalB.remove the oil from the waterC.disperse or dissolve the oil in the waterD.not affect the oil
The most common type of containment device for spilled oil on the water is the use of _____.A.strawB.boomsC.skimmersD.chemical dispersants
Coalescence(聚合) is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and ______in size.A.expandB.extractC.increaseD.decrease
Fueling results in the collection of waste oil in drip pans and containers. Which is an approved method of disposing of the waste oil?A.Draining it overboard when the vessel gets underwayB.Placing it in proper disposal facilitiesC.Adding sinking agents and discharging it into the waterD.Mixing it with dispersants before draining it overboard
Oil slick caused by spillage of oil from tanker ship is ______.A.a drop of oilB.the emulsion of oil at sea surfaceC.the weathered oilD.the oil floating on the surface of the sea water
International Certificate of Fitness for the Carriage of Dangerous Chemicals in Bulk shall be carried on board by ______．A.chemical tankers constructed on or after 1 July 1986B.chemical tankers constructed before 1 July 1986C.All chemical tankersD.oil tankers of 150 gross tonnage and above
Which of the following may be used in cleaning up an oil spill without the permission of governmental authorities ________．A.Straw and Skimmers onlyB.Skimmers and Chemical dispersants onlyC.Straw and Chemical dispersants onlyD.Straw，Skimmers and Chemical dispersants
单选题One disadvantage of using regular dry chemical (sodium bicarbonate) in firefighting is that（）.Ait can break down under high heat and emit noxious fumesBit will decompose under prolonged storage and lose its effectivenessCfire has been known to flash back over the surface of an oil fireDit is ineffective in fighting fires in high-voltage electrical equipment
单选题A (n) （） is a chemical or electro-chemical attack on the metal surface which may be further increased if the sea-water is polluted.AerosionBcorrosionCcavityDscouring
单选题In cleaning up an oil spill, the use of straw or reclaimed paper fibers would be an example of which type of oil removal?（）AChemical agent removalBMechanical removalCAbsorbent removalDNone of the above
问答题Chemistry is the study of the behavior and composition of matter. All foodsare made up of chemical substance which undergoes chemical changes when cooking 1．_______in an oven or digested within the body. The cooking of meat and vegetables induce 2．_______chemical changes, making it more delicious; similarly the leavening action of 3．_______baking powder is a straightforward chemical change, as is the conversion ofstarch into sweet sugars by digestion. Cookery is a science requiring for a knowledge of chemistry. 4．_______This is evident from the variety of cooking products and food additives availableas cooking oils, fats, colorings, sweeteners, tenderizers, flavorings, scream-ing agents, preservatives, etc. Each is carefully prepared before painstaking 5．_______research. It is therefore essential for trained cookers to understand 6．_______chemical science in order to appreciate the chemistry nature of foods 7．_______and the changes achieving on cooking. Homeworkers should also 8．_______know cleansing agents and textiles used in the home and how the latter 9．_______responds to the effects of heat, light, water, and chemical cleansing agents. 10．_______
单选题What is an advantage of using foam in fire fighting?（）AIt is effective in controlling fire in flowing oil such as coming from a broken fuel lineBIt absorbs heat from materials that could cause reignitionCMost foams can be used jointly with dry chemical extinguishing agents to attack a fire by two methods of extinguishmentDOnce the surface is blanketed with foam and the fire is extinguished，no further foam is required
单选题The removal of （） from lubricating oil will reduce engine wear and possible breakdowns.Acontaminating waterBcontaminated additivesCcontaminated fuelDcontaminating impurities
单选题Gas exchange, which is a basic part of the cycle of an internal combustion engine, is（）Athe supply of normal air and removal of compressed airBthe supply of fuel oil and combustion of the atomized oilCthe supply of fresh air and removal of exhaust gasesDthe supply of fresh air and removal of the extra heat
单选题The use of sinking and dispersing agents for the removal of surface oil is （）.Athe most common method used in the United StatesBtoo expensive for common useCgenerally safe to sea lifeDgenerally harmful to sea life
单选题The Master should call （） for permission to use chemical agents in response to oil pollution into sea.Athe flag stateBthe coastal stateCthe port stateDthe shipping company
单选题“Before disconnecting the oil pipe, would you flush the oil retained in the pipe?” asked the oil barge owner （）Aby using of fresh waterBwith compressed airCby using of sea waterDwith chemical compound
单选题When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent （）.Aair from contacting the oil vaporsBpermitting re-ignition boiling of the heated oilCspontaneous combustion below the oil surfaceDtoxic fumes from escaping to the surface
单选题Fueling results in the collection of waste oil in drip pans and containers. Which is an approved method of disposing of the waste oil? （）ADraining it overboard when the vessel gets underwayBPlacing it in proper disposal facilitiesCAdding sinking agents and discharging it into the waterDMixing it with dispersants before draining it overboard
单选题Which oil is not suitable for use as storm oil?（）AFish oilBVegetable oilCMineral oilDAnimal oil
单选题Coalescence is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and （） in size.AexpandBextractCincreaseDdecrease
单选题When oil is accidentally discharged into the water，what should you do after reporting the discharge（）.AContain the oil and remove as much of it as possible from the waterBThrow chemical agents on the water to disperse the oilCThrow sand on the water to sink the oilDObtain your permit from the Corps of Engineers
单选题If an oil spill occurs on deck, you should （）.Acover the area with foamBcover the area with absorbent materialCwash down immediately with a fire hoseDwash down immediately with an oil dispersing solvent
单选题In cleaning up an oil spill, the use of chemical agents would （）.Aabsorb the oil for easy removalBremove the oil from the waterCdisperse or dissolve the oil in the waterDnot affect the oil
单选题The use of sinking and dispersing chemical agents for removal of surface oil is（）.Athe most common method used in the United StatesBtoo expensive for common useCgenerally safe to sea lifeDauthorized only with prior approval of the Federal On-Scene Coordinator
单选题The use of sinking and dispersing chemical agents for removal of surface oil is（）.Athe most common methodBtoo expensive for common useCgenerally safe to sea lifeDauthorized only with prior approval of the governmental On-Scene Coordinator