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Satellites were launched（）low orbit for weather and military applications.
A．on B．around C．in D．with
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更多 “ Satellites were launched（）low orbit for weather and military applications.A．on B．around C．in D．with ” 相关考题
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Now satellites are 36 to forecast（预报）the weather. They are in space, and they can 37 any part of the world. The satellites take pictures of the atmosphere（大气），38 this is where the weather forms（形成）. They send these 39 to the weather stations. So meteorologists（气象学家）can see the weather of any part of the world. From the pictures, the scientists can often say 40 the weather will change.Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare them with earlier 41 . Perhaps they may find that the clouds have changed during the last few hours. This may mean that the 42 on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.So the weather satellites are a great 43 to the meteorologists. 44 __satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon, perhaps, they may 45 forecast the weather for a week or more ahead（提前）.36.________________A. help B. to help C. helped D. helping
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Parts were ordered only as needed, keeping () and overhead low.
A、inventoryB、sacrificeC、drippingD、clear-cut
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“When were you born?” “I was born ________.”
A.on October twelveth nineteen sixty-fiveB.on October the twelfth nineteen sixty-fiveC.in nineteen sixty-five October twelvethD.in nineteen sixty-five October twelfth
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根据下列材料请回答 31～35 题：ANow satellites are helping to forecast the weather．They are in space，and they can reach any part of the world．The satellites take pictures of the atmosphere(大气)，because this is where the weather form．They send these pictures to the weather stations．So meteorologists(气象学家)can see the weather of any part of the world．From the pictures，the scientists can often say how the weather will change．Today，nearly five hundred weather stations in sixty countries receive satellite pictures．When they receive new pictures，the meteorologists compare them with earlier ones．Perhaps they may find that the clouds have changed during the last few hours．This may mean that the weather on the ground may soon change，too．In their next weather forecast，the meteorologists can say this．So the weather satellites are a great help to the meteorologists．Before satellites were invented，the scientists could forecast the weather for about 24 0r 48 hours．Now they can make good forecasts for three or five days．Soon，perhaps，they may be able to forecast the weather for a week or more ahead．第 31 题 Satellites travel______．A．in spaceB．in the atmosphereC．above the groundD．above space
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Why do we use the weather satellites to take pictures of the atmosphere?Because______．A．the weather satellites can do it easilyB．clouds form. thereC．the weather forms thereD．the pictures can forecast the weather
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The main idea of this passage is that satellites aye now used in______．A．taking pictures of the atmosphereB．receiving pictures of the atmosphereC．doing other work in many waysD．weather forecasting
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Cold weather starting of a diesel engine is more difficult than warm weather starting due toA.use of low viscosity oil in cold weatherB.increased moisture content of inlet air in cold weatherC.increased drag of pistons and bearings due to increased oil viscosityD.higher compression pressures reached due to smaller clearances existing in the engine during cold weather
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A decrease in barometric pressure is associated with all of the following except ______.A.rising warm airB.proximity to a low pressure areaC.inward spiraling circulationD.clear dry weather
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Good weather is usually associated with a region of ______.A.low barometric pressureB.high barometric pressureC.falling barometric pressureD.pumping barometric pressure
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In rough weather, when a ship is able to maneuver, it is best to launch a lifeboat ______.A.on the lee sideB.on the windward sideC.with the wind dead aheadD.with the wind from astern
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Satellites were launched （） low orbit for weather and military applications.A、onB、aroundC、inD、with
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单选题Thousands of Irish people starved during the “Potato Famine” because _____.A
they were so dependent on the potato that they refused to eat anything elseB
they were forced to emigrate to AmericaC
the weather conditions in Ireland were not suitable for growing the potatoD
the potato harvest was bad
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单选题Passage3 Questions 11 to 15 are based on the following passage. Many of the most damaging and life threatening types of weather, such as torrential rains and severe thunderstorms, begin quickly, strike suddenly, and disappear rapidly, destroying small regions while leaving neighboring areas untouched. (79) Conventional（普通） computer models of the atmosphere have limited value in predicting short-lived local storms because the available weather data are generally not detailed enough to allow computers to see clearly the small atmospheric changes that come before these storms.In most nations, for example, weather-balloon observations are taken just once ever3r twelve hours at location typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events. Until recently, the observation-intensive approach needed for accurate, very short range forecasts, or nowcasts, was impracticable. The cost of equipping and operating many thousands of conventional weather stations was extremely high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were beyond overcoming.Fortunately, scientific and technological advance have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observations over large regions at a relatively low cost. Communication satellites can transmit data around the world cheaply and immediately, and modern computers can quickly compile and analyze this large volume of weather information. (80) Meteorologists（气象学家）and computer scientists now work together to design computer programs and video equipment capable of transforming r.aw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, nowcasting is becoming a reality.12 Nowcasts are_______.A
local forecastsB
short-range forecastsC
medium-range forecastsD
long-range forecasts
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单选题If a refrigeration compressor were short cycling on the low pressure cutout switch, the probable cause for this might be the （）.A
system was overcharged with refrigerantB
high pressure switch was improperly adjustedC
expansion valve strainers were fouledD
suction valves were leaking slightly
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单选题If a refrigeration crankcase compressor were short cycling on the low pressure cutout switch, the cause might be that the （）.A
system was overcharged with refrigerantB
system was low on refrigerantC
suction valves were leaking slightlyD
relief valve was leaking slightly
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单选题Passage3 Questions 11 to 15 are based on the following passage. Many of the most damaging and life threatening types of weather, such as torrential rains and severe thunderstorms, begin quickly, strike suddenly, and disappear rapidly, destroying small regions while leaving neighboring areas untouched. (79) Conventional（普通） computer models of the atmosphere have limited value in predicting short-lived local storms because the available weather data are generally not detailed enough to allow computers to see clearly the small atmospheric changes that come before these storms.In most nations, for example, weather-balloon observations are taken just once ever3r twelve hours at location typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events. Until recently, the observation-intensive approach needed for accurate, very short range forecasts, or nowcasts, was impracticable. The cost of equipping and operating many thousands of conventional weather stations was extremely high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were beyond overcoming.Fortunately, scientific and technological advance have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observations over large regions at a relatively low cost. Communication satellites can transmit data around the world cheaply and immediately, and modern computers can quickly compile and analyze this large volume of weather information. (80) Meteorologists（气象学家）and computer scientists now work together to design computer programs and video equipment capable of transforming r.aw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, nowcasting is becoming a reality.14 Things have been changed by the following EXCEPT______.A
the use of radar systems and automated instrumentsB
the use of communication satellites and modern computersC
the joint work of meteorologists and computer scientistsD
weather information volume is large enough to compile and analyze
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单选题Fuel oil having a low cetane rating could result in（）A
improved cold weather startingB
excessive fuel oil consumptionC
reduced ignition lagD
smoother engine operation
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单选题CATEGORY A EPIRB’s transmit on frequencies that are monitored by（）.A
orbiting satellites in spaceB
commercial radio stationsC
private，commercial，and military aircraftD
ordinary radio stations
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单选题A decrease in barometric pressure is associated with all of the following except（）.A
rising warm airB
proximity to a low pressure areaC
inward spiraling circulationD
clear dry weather
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单选题A single barometric pressure reading of 28.60 indicates（）.A
rapidly improving weatherB
deteriorating weatherC
a severe low pressure systemD
fair weather and calm
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单选题Which general weather conditions should you expect to find in a low pressure system（）.A
Fair weatherB
Precipitation and cloudinessC
Scattered clouds at high elevationsD
Gradual clearing and cooler temperatures
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单选题Cold weather starting of a diesel engine is more difficult than warm weather starting due to（）A
use of low viscosity oil in cold weatherB
increased moisture content of inlet air in cold weatherC
increased drag of pistons and bearings due to increased oil viscosityD
higher compression pressures reached due to smaller clearances existing in the engine during cold weather
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单选题Satellites were launched （） low orbit for weather and military applications.A
onB
aroundC
inD
with
考题
单选题Passage3 Questions 11 to 15 are based on the following passage. Many of the most damaging and life threatening types of weather, such as torrential rains and severe thunderstorms, begin quickly, strike suddenly, and disappear rapidly, destroying small regions while leaving neighboring areas untouched. (79) Conventional（普通） computer models of the atmosphere have limited value in predicting short-lived local storms because the available weather data are generally not detailed enough to allow computers to see clearly the small atmospheric changes that come before these storms.In most nations, for example, weather-balloon observations are taken just once ever3r twelve hours at location typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events. Until recently, the observation-intensive approach needed for accurate, very short range forecasts, or nowcasts, was impracticable. The cost of equipping and operating many thousands of conventional weather stations was extremely high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were beyond overcoming.Fortunately, scientific and technological advance have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observations over large regions at a relatively low cost. Communication satellites can transmit data around the world cheaply and immediately, and modern computers can quickly compile and analyze this large volume of weather information. (80) Meteorologists（气象学家）and computer scientists now work together to design computer programs and video equipment capable of transforming r.aw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, nowcasting is becoming a reality.13 Nowcasts used to be impracticable because______.A
there were no conventional computersB
the cost of the equipping and operating was sky-highC
there were no difficulties in data processingD
there were not enough meteorologists
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单选题Thousands of Irish people starved because _____.A
they depended on the potatoB
they were forced to move to AmericaC
the weather conditions in Ireland. were not fit for growing the potatoD
the potato harvest was bad
考题
单选题Passage3 Questions 11 to 15 are based on the following passage. Many of the most damaging and life threatening types of weather, such as torrential rains and severe thunderstorms, begin quickly, strike suddenly, and disappear rapidly, destroying small regions while leaving neighboring areas untouched. (79) Conventional（普通） computer models of the atmosphere have limited value in predicting short-lived local storms because the available weather data are generally not detailed enough to allow computers to see clearly the small atmospheric changes that come before these storms.In most nations, for example, weather-balloon observations are taken just once ever3r twelve hours at location typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events. Until recently, the observation-intensive approach needed for accurate, very short range forecasts, or nowcasts, was impracticable. The cost of equipping and operating many thousands of conventional weather stations was extremely high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were beyond overcoming.Fortunately, scientific and technological advance have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observations over large regions at a relatively low cost. Communication satellites can transmit data around the world cheaply and immediately, and modern computers can quickly compile and analyze this large volume of weather information. (80) Meteorologists（气象学家）and computer scientists now work together to design computer programs and video equipment capable of transforming r.aw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, nowcasting is becoming a reality.15 The dream of nowcasts will come true when______.A
the cost is loweredB
people need it to reduce damagesC
meteorologists can make full use of the new technologiesD
conventional weather forecasts are got rid of
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