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单选题
barometer（）
A
气压计
B
温度计
C
六分仪
D
主罗经
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The purpose of the "set" hand on an aneroid barometer is to ______.A.adjust the barometerB.indicate any change in the reading of the barometerC.provide a correction for height above sea levelD.provide a correction for temperature changes
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A mercurial barometer at sea is subject to rapid variations in height ("pumping") due to the pitch and roll of the vessel. To avoid this error，measurements of atmospheric pressure at sea are usually measured with a(n) ______.A.syphon barometerB.cistern barometerC.aneroid barometerD.fortin barometer
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A vessel entering the eye of a hurricane should expect ______.A.moderating winds and heavy confused seas to strike his vessel from all directionsB.the winds to increase to hurricane force and strike from a different direction as the eye passesC.the barometer to reach the lowest pointD.All of the above
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You are located within a stationary high pressure area．Your aneroid barometer is falling very slowly．This indicates a（n）______．A.Wind shift of 180°B.Large increase in wind velocityC.Decrease in the intensity of the systemD.Increase in the intensity of the system
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Barometer readings in weather reports are given in terms of pressure at ______.A.sea levelB.China SeaC.the weather stationD.the broadcasting station
考题
For an accurate barometer check, you would ______.A.check it with a barometer on another vesselB.take readings from several barometers and average themC.check it with the barometer at the ship chandleryD.check it against radio or National Weather Service reports of the immediate vicinity
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If a hurricane several hundred miles away is moving in your general direction your barometer would ______.A.start to rise rapidlyB.start to fall gradullyC.rise slowly, begin “pumping” and then start a slow, steady fallD.remain steady
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共用题干
Ants as a Barometer of Ecological ChangeAt picnics,ants are pests.But they have their uses.In industries such as mining,farming and forestry,they can help gauge the health of the environment by just crawling around and being antsy.It has been recognized for decades that ant—which are highly sensitive to ecological change—can provide a near-perfect barometer of the state of an ecosystem.Only certain species, for instance,will continue to thrive at a forest site that has been cleared of trees._______(46) And still others will move in and take up residence.By looking at which species populate a deforested area,scientists can determine how “stressed”the land is._______(47)Ants are used simply because they are so common and comprise so many species.Where mine sites are being restored,for example,some ant species will recolonize the stripped land more quickly than others._______(48)Australian mining company Capricorn Coal Management has been successfully using ant surveys for years to determine the rate of recov-ery of land that it is replanting near its German Creek mine in Queensland.Ant surveys also have been used with mine-site recovery projects in Africa and Brazil,where warm climates encourage dense and diverse ant populations.“We found it worked extremely well there,”says Jonathan Majer,a professor of environmental biology.Yet the surveys are perfectly suited to climates throughout Asia,he says,because ants are so common throughout the region. As Majer puts it:“That's the great thing about ants.”Ant surveys are so highly-regarded as ecological indicators that governments worldwide accept their results when assessing the environmental impact of mining and tree harvesting._______ (49)Why not?Because many companies can't afford the expense or the laboratory time needed to sift results for a comprehensive survey.The cost stems,also,from the scarcity of ant specialists. ______(50)_______(46)A: This allowed scientists to gauge the pace and progress of the ecological recovery.B: Yet in other businesses,such as farming and property development,ant surveys aren't used widely.C: Employing those people are expensive.D: They do this by sorting the ants,counting their numbers and comparing the results with those of earlier surveys.E: The evolution of ant species may have a strong impact on our ecosystem.F: Others will die out for lack of food.
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共用题干
Ants as a Barometer of Ecological ChangeAt picnics,ants are pests.But they have their uses.In industries such as mining,farming and forestry , they can help gauge（测定）the health of the environment by just crawling around and being antsy（坐立不安）.It has been recognized for decades that ants—which are highly sensitive to ecological change—can provide a near-perfect barometer（气压计）of the state of an ecosystem. Only certain species,for instance,will continue to thrive at a forest site that has been cleared of trees. ______(46)And still others will move in and take up residence.By looking at which species populate a deforested area,scientists can determine how“stressed”the land is.______(47)Ants are used simply because they are so common and comprise（构成）so many species.Where mine sites are being restored,for example,some ant species will recolonize（重新移居到.……）the stripped land more quickly than others.______ (48 ) Australian mining compa- ny Capricorn Coal Management has been successfully using ant surveys for years to determine the rate of recovery of land that it is replanting near its German Creek mine in Queensland.Ant surveys also have been used with mine-site recovery projects in Africa and Brazil,where warm climates encourage dense and diverse ant populations.“We found it worked extremely well there,”says Jonathan Major,a professor of environmental biology.Yet the surveys are perfectly suited to climates throughout Asia,he says,because ants are so common throughout the region.As Major puts it:“That's the great thing about ants.”Ant surveys are so highly regarded as ecological indicators（指示器）that governments world-wide accept their results when assessing（评估）the environmental impact of mining and tree har- vesting.______(49）.Why not?Because many companies can't afford the expense or the laboratory time needed to sift（详审）results for a comprehensive survey. The cost stems,also, from the scarcity（缺乏）of ant specialists.______(50)______(47)A:This allowed scientists to gauge the pace and progress of the ecological recovery.B:Yet in other businesses,such as farming and property development,ant surveys aren't used widely.C: Employing those people are expensive.D: They do this by sorting the ants,counting their numbers and comparing the results with those of earlier surveys.E: The evolution of ant species may have a strong impact on our ecosystem.F: Others will die out for lack of food.
考题
单选题A barometer showing falling pressure indicates the approach of a（）.A
high pressure systemB
low pressure systemC
high dew pointD
low dew point
考题
单选题An aneroid barometer reading should be corrected for differences in（）.A
elevationB
temperatureC
wind speedD
latitude
考题
单选题Prior to reading an aneroid barometer，you should tap the face lightly with your finger to（）.A
expose any loose connectionsB
demagnetize the metal elementsC
bring the pointer to its true positionD
contract and expand the glass face
考题
单选题The purpose of the “set” hand on an aneroid barometer is to（）.A
adjust the barometerB
indicate any change in the reading of the barometerC
provide a correction for height above sea levelD
provide a correction for temperature changes
考题
单选题If a hurricane several hundred miles away is moving in your general direction your barometer would（）.A
start to rise rapidlyB
start to fall graduallyC
rise slowly,begin pumping and then start a slow,steady fallD
remain steady
考题
单选题An instrument useful in predicting fog is the（）.A
sling psychrometerB
microbarographC
anemometerD
aneroid barometer
考题
单选题For an accurate barometer check，you would（）.A
check it with a barometer on another vesselB
take readings from several barometers and average themC
check it with the barometer at the ship chandleryD
check it against radio or National Weather Service reports of the immediate vicinity
考题
单选题What indicates that a tropical cyclone may be within 500 to 1，000 miles of your position?（）A
A pumping of the barometer up and down a few millibarsB
A sudden wind shift from southwest to northwest followed by steadily increasing windsC
The normal swell pattern becoming confused，with the length of the swell increasingD
An overcast sky with steadily increasing rain from nimbostratus clouds
考题
单选题As a high pressure system approaches，the barometer reading（）.A
stays the sameB
fallsC
risesD
falls rapidly
考题
单选题The most important information to be obtained from a barometer is the（）.A
difference between the reading of the two pointers，which shows wind directionB
last two figures of the reading of the pointer，such as 87，76，or 92C
present reading of the pressure，combined with the changes in pressure observed in the recent pastD
weather indications printed on the dial (such as cold，wet，etc.) under the pointer
考题
单选题A rapid rise or fall of the barometer indicates（）.A
heavy rain within six hoursB
a decrease in wind velocityC
a change in the present weather conditionsD
that fog will soon set in
考题
单选题A mercurial barometer at sea is subject to rapid variations in height (“pumping”) due to the pitch and roll of the vessel. To avoid this error，measurements of atmospheric pressure at sea are usually measured with a(n)（）.A
syphon barometerB
cistern barometerC
aneroid barometerD
fortin barometer
考题
单选题A slow，gradual fall of the barometer indicates approaching（）.A
gale force winds within 12 hoursB
blizzard conditionsC
deteriorating or unsettled weatherD
heavy，wind driven rain
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