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）
Satellites were launched （） low orbit for weather and military applications.
- A、on
- B、around
- C、in
- D、with
参考答案
更多 “Satellites were launched （） low orbit for weather and military applications.A、onB、aroundC、inD、with” 相关考题
考题
109 Problems can occur in properly defining a project because:A. Project goals may not be agreeable to all partiesB. The plan was "too loose," thus allowing priorities to changeC. Low turnover of project personnelD. Too much communication between the client and project personnelE. The project objectives were quantified
考题
● Problems can occur in properly defining a project because:A Project goals may not be agreeable to all partiesB The plan was "too loose," thus allowing priorities to changeC Low turnover of project personnelD Too much communication between the client and project personnelE The project objectives were quantified
考题
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
考题
Parts were ordered only as needed, keeping () and overhead low.
A、inventoryB、sacrificeC、drippingD、clear-cut
考题
In their hiding place, the criminals lived in fear(). They knew the police were searching high and low for them.
A、again and againB、all the time
考题
Nother matter how low you consider yourself ,there is always someone _________you wishingThey were that high.A. getting rid ofB. getting along withC. looking up toD. looking down upon
考题
Wheat prices were generally low in the autumn, so farmers could not wait for markets to improve.(语法上正确与否)()
此题为判断题(对，错)。
考题
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
考题
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
考题
Satellites were launched（）low orbit for weather and military applications.A．on B．around C．in D．with
考题
The discount houses were first established in that period of time ________ people‘s purchasing power was low. A. which B. that C. when D. where
考题
The Moon and most artificial satellites travel around the Earth in elliptical paths．A: waves
B: orbits
C: voyages
D: flights
考题
Which of the following is a diplexer used for？（）A、Allows two satellite tuners to use the same dish.B、Connects the low noise block down converter （LNB） to the multi-switch.C、Combines satellite and over the air （OTA） signals.D、Allows one LNB to use two satellites.
考题
单选题According to the passage, cell phones were launched _____.A
in the late 1970sB
between 1980 and 1985C
in the late 1980sD
in the early 1990s
考题
单选题If a davit-launched liferaft aboard a ship cannot be launched because of damage to the davit，you should（）.A
inflate the liferaft on deckB
roll the liferaft over the sideC
go to another liferaft stationD
get a saw and cut the liferaft free
考题
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
考题
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
考题
单选题Which of the italicized parts functions as a complement（补语）?A
We were greatly encouraged by the news of China’s having launched another man-made satellite.B
His wish is everyone’s having a good time.C
I saw an old man getting on the bus.D
The smiling boy needs a pen bought by his mother
考题
单选题The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．A
oneB
twoC
threeD
four
考题
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
考题
填空题Animal welfare was a low-rated trust factor partly because consumers were reluctant to pay extra money for “animal friendly” products.____
考题
单选题Geostationary satellites are the artificial satellites which（）.A
always move slowlyB
are in one place onlyC
sometime move sometime don‟t moveD
are synchronizing with the movement of the earth
考题
单选题Which statement about satellite navigation is TRUE? （）A
While a fix can be generated by signals received from two satellites，three satellites are necessary for reliable accuracyB
The satellites are in equatorial orbits around the earth about 60°of longitude apartC
The satellite navigation system determines a fix by measuring the doppler shift of the radio signals from the satelliteD
The ship's receiver cannot begin processing data until the antenna locks onto the satellite and starts continuous tracking
考题
单选题People waited outside Apple stores early, because ______.A
they could get a gift when the store openedB
they wanted to own the iPad as early as they canC
the price of the iPad was low at firstD
there were a few iPads on sale
热门标签
最新试卷