网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
According to the passage, atmospheric carbon dioxide performs all of the following functions EXCEPT: _____.
A
absorbing radiation at visible wavelengths
B
absorbing infrared radiation
C
absorbing outgoing radiation from the Earth
D
helping to retain heat near the Earth’s surface
参考答案
参考解析
解析：
文章第一段第二句指出，“these molecules allow radiation at visible wavelengths, where most of the energy of sunlight is concentrated, to pass through”，所以此处二氧化碳的作用是允许可见光波长的辐射穿过大气层，而不是将其“吸收”，因此A项不符合文章描述，符合题目要求；选项B、C在第二句的后半句有所体现，选项D在第一段的倒数第三句可以找到对应。
文章第一段第二句指出，“these molecules allow radiation at visible wavelengths, where most of the energy of sunlight is concentrated, to pass through”，所以此处二氧化碳的作用是允许可见光波长的辐射穿过大气层，而不是将其“吸收”，因此A项不符合文章描述，符合题目要求；选项B、C在第二句的后半句有所体现，选项D在第一段的倒数第三句可以找到对应。
更多 “单选题According to the passage, atmospheric carbon dioxide performs all of the following functions EXCEPT: _____.A absorbing radiation at visible wavelengthsB absorbing infrared radiationC absorbing outgoing radiation from the EarthD helping to retain heat near the Earth’s surface” 相关考题
考题
If the () of carbon dioxide in the atmosphere is increased as a result of air pollution.
A. rateB. proportionC. extentD. amount
考题
The ___________ of gases such as carbon dioxide should be stabilized at their present level.
A、emissionB、emitC、radiationD、evaporation
考题
To achieve success in your career, the most important factor, according to the passage, is to ______.A) work as a consultant to your superiorsB) project a favorable image to the people around youC) let your superiors know how good you areD) perform. well your tasks given by your superiors
考题
Theoretical perfect combustion in a diesel engine yields by-products of_____.A.aldehydes and carbon dioxideB.water vapor and carbon monoxideC.nitrogen and carbon monoxideD.water vapor and carbon dioxide
考题
According to Harry Morrison, businesses .A．will benefit from cutting carbon emissionsB．should buy carbon allowances for shoppersC．are required to make up for their carbon emissionsD．have encouraged shoppers to take their custom elsewhere
考题
In the event of fire in a machinery space，______.A.the fixed carbon dioxide system should be used only when all other means of extinguishment have failedB.the fixed carbon dioxide system should be used immediately，as it is the most efficient means of extinguishmentC.water in any form should not be used as it will spread the fireD.the space should be opened 5 minutes after flooding CO2 to prevent injury to personnel
考题
What could result in an incorrect oxygen concentration reading on the oxygen indicator ________．A.Exposure to carbon dioxide for no more than 1 minuteB.Exposure to carbon dioxide for more than 10 minutesC.Exposure to a very low concentration of sulfur dioxide for no more than 2 minutesD.None of the above
考题
The most effective way of applying carbon dioxide from a portable extinguisher to a fire is by ______．A.Forming a cloud cover over the flamesB.Directing the gas at the base of the flames in a slow sweeping motionC.Discharging the carbon dioxide into the heart of the flamesD.Bouncing the discharge off an adjacent bulkhead just above the burning surface
考题
______, as the chemical extinguisher agent, should be used for an electric fire.A.dry chemical or foamB.foam or soda acidC.carbon dioxide or foamD.carbon dioxide or dry chemical
考题
Which of the following，according to the passage，is a list of three natural sources of radiation？( ) A.Radioactive potassium in bone，strontium 90，uranium ore.
B.Carbon 14 in tissues，cosmic rays，X rays.
C.Cosmic rays，radioactive potassium in bones，radioactive carbon in tissues.
D.X rays，carbon 14，plutonium.
考题
单选题As compared to carbon dioxide，dry chemical has which advantage?（）.A
CleanerB
Effective on metal firesC
Greater rangeD
More cooling effect
考题
单选题According to the passage, which of the following is true of the last hundred years?A
Fossil fuels were burned for the first time.B
Greater amounts of land were cleared than at any time before.C
The average temperature at the Earth’s surface has become 2℃ cooler.D
The amount of carbon dioxide in the atmosphere has increased measurably.
考题
填空题Glucose can be completely broken down into carbon dioxide and water when oxygen is present in the process called aerobic respiration.____
考题
单选题An advantage of an ABC dry chemical over a carbon dioxide extinguisher is（）.A
lack of toxicityB
the multipurpose extinguishing abilityC
burn-back protectionD
cooling ability
考题
单选题The danger associated with using carbon dioxide in an enclosed space is（）.A
frostbiteB
skin burnsC
asphyxiationD
an explosive reaction
考题
单选题According to the passage, the greatest part of the solar energy that reaches the Earth is _____.A
reflected back to space by snow and iceB
concentrated at visible wavelengthsC
absorbed by carbon dioxide moleculesD
absorbed by atmospheric water vapor
考题
单选题An advantage of a dry chemical over a carbon dioxide fire extinguish is its（）.A
greater rangeB
effective on all types of firesC
cleanlinessD
All of the above
考题
单选题As compared to carbon dioxide,dry chemical has which advantage?（）.A
CleanerB
EffectiveC
Greater rangeD
More cooling effect
考题
单选题According to the Chemical Data Guide，when burning，the grade B flammable liquid，carbon disulfide produces（）.A
phosgene gasB
sulfuric acid gasC
sulfur dioxide gasD
carbon tetrachloride
考题
单选题Theoretical perfect combustion in a diesel engine yields by-products of （）.A
aldehydes and carbon dioxideB
water vapor and carbon monoxideC
nitrogen and carbon monoxideD
water vapor and carbon dioxide
考题
单选题Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?（）A
Carbon dioxide is corrosive when exposed to fireB
Carbon dioxide should be applied slowly to a large engine room fireC
Its total cooling effect is far greater than waterD
Its smothering effect is excellent for class B fires
考题
单选题Which of the following best expresses the purpose of this passage?A
To explain how a loophole in the Clean Air Act allows power plants to avoid compliance with emissions restrictionsB
To raise awareness of the problems caused by sulfur dioxide emissions from coal-burning power plantsC
To argue against a specific implementation of the Clean Air Act that relates to greenhouse gas emissionsD
To argue that companies should not exploit a loophole in the Clean Air Act concerning an atmospheric pollutantE
To advocate the passage of a new Clean Air Act that places limits on sulfur dioxide emissions
考题
判断题Natural systems can reduce the amount of carbon dioxide in the atmosphere caused by carbon emissions.A
对B
错
考题
单选题The primary purpose of the passage is to _____.A
warn of the dangers of continued burning of fossil fuelsB
discuss the significance of the amount of carbon dioxide in the atmosphereC
demonstrate the usefulness of mathematical models in predicting long-range climatic changeD
describe the ways in which various atmospheric and climatic conditions contribute to the Earth’s weather
考题
单选题According to the T-Boat regulations the reason for providing adequate ventilation for a battery storage area is to prevent（）.A
accumulation of carbon dioxide gas that chokes the batteryB
accumulation of explosive and toxic gases the battery can generateC
mildew or dry rot in the battery boxD
battery failure including battery case meltdown caused by excessive heat
考题
单选题Why should you wear a self-contained breathing apparatus before entering the engine room after the fixed CO2 system has been discharged to combat a major fire?（）A
Because carbon dioxide dilutes the oxygen concentration in the atmosphere and may cause asphyxiationB
Because carbon dioxide breaks down in a fire into carbon monoxide which may cause blood poisoning in the person breathing this gasC
Because carbon dioxide is a colorless and odorless gas that becomes highly toxic in the presence of high temperatures and will quickly incapacitate a person exposed to this gasD
This action is unnecessary as carbon dioxide is not poisonous nor toxic but is a relatively harmless gas
考题
单选题According to the information given in the passage, sulfur dioxide emissions are linked to all except which of the following phenomena?A
Reduced visibility in the eastern United StatesB
Damage to the ozone holeC
Increased rates of asthmaD
Acid rainE
Damaged forests
热门标签
最新试卷