Ireland is one of the leading exporters of（）in Europe.A、coal and iron oreB、silver and goldC、copper and aluminumD、lead and zinc
Ireland is one of the leading exporters of（）in Europe.
- A、coal and iron ore
- B、silver and gold
- C、copper and aluminum
- D、lead and zinc
相关考题：
Why did Sturgeon's electromagnet could support nine pounds of iron?A. Because the iron rod was bent into the shape of a “horseshoe”.B. Because the rod was coated with varnish.C. Because a layer of copper wire was wrapped around the rod.D. Because the rod was made magnetic by the passing current.
When the issue is syndicated among the original investment banker and other institutions, ______.A．there is only one lead managerB．there must be more than one lead managerC．all the parties concerned are lead managersD．there is one lead manager or more than one lead manager
Coal mining industry in Britain prorides()of the energy consumed in the country, A 、one-thindB、one-fourthC、one-fthD、two-thinds
With the boy()the way, we had no trouble()the way()to Zhongshan Park. A、Leading finding leadingB、to lead found to leadC、Led finding ledD、Leading found led
Many early Chinese immigrants worked in the mining industry, especially in the _____. A.gold minesB.silver minesC.coal minesD.copper mines
The news shocked the public, to great concem about students safety at school.A. having led B. ledC. leading D. to lead
They built a highway _______ the mountains. A. lead into B. to lead into C. led into D. leading into
With the villager __________ the way, we had no trouble __ the cottage.A.to lead; findingB.to lead; to fredC.leading; to findD.leading; finding
Silver is the best conductor of electricity, copper ___________ it closely.A.followedB.to followC.followingD.being followed
共用题干第三篇Iron DeficienciesExperts have observed for years that endurance athletes,particularly females,frequently have iron deficiencies.Now a new study by a team of Purdue University researchers suggests that even moderate exercise may lead to reduced iron in the blood of women."We found that women who were normally inactive and then started a program of moderate exercise showed evidence of iron loss,"says Roseanne M.Lyle,associate professor at Purdue.Her study of 62 formerly inactive women who began exercising three times a week for six months was published in the journal Medicine & Science in Sports & Exercise."Women who consumed additional meat or took iron supplements were able to bounce back,"she notes."But the new exercisers who followed their normal diet showed a significant decrease in iron levels."Iron deficiency is very common among women in general,affecting one in four female teenagers and one in five women aged 18 to 45,respectively.But the ratio is even greater among active women,affecting up to 80 percent of female endurance athletes.This means,Lyle says,that"too many women ignore the amount of iron they take in."Women of childbearing age are at greatest risk,since their monthly bleeding is a major source of iron loss.Plus,many health-conscious women increase their risk by rejecting red meat,which contains the most easily absorbed form of iron.And because women often restrict their diet in an effort to control weight,they may not consume enough iron-rich food,and are liable to experience a deficiency."The average woman takes in only two thirds of the recommended daily allowance of iron," notes another expert."For a woman who already has a poor iron status,any additional iron loss from exercise may be enough to tip her over the edge into a more serious deficiency,"notes the expert. Exercise can result in iron loss through a variety of mechanisms.Some iron is lost in sweat,and,for unknown reasons,intense endurance exercise is sometimes associated with bleeding of the digestive system.The best sources of iron,and the only sources of the form of iron most readily absorbed by the body,are meat,chicken,and fish.Good sources of other forms of iron include dates,beans,and some leafy green vegetables.Who will have a significant decrease in iron levels?A:All the women.B:All the inactive women.C:Women who start to do moderate exercise and follow their normal diet.D:Women who start to do moderate exercise and consume additional meat or take iron supplements.
共用题干第三篇Iron DeficienciesExperts have observed for years that endurance athletes,particularly females,frequently have iron deficiencies.Now a new study by a team of Purdue University researchers suggests that even moderate exercise may lead to reduced iron in the blood of women."We found that women who were normally inactive and then started a program of moderate exercise showed evidence of iron loss,"says Roseanne M.Lyle,associate professor at Purdue.Her study of 62 formerly inactive women who began exercising three times a week for six months was published in the journal Medicine & Science in Sports & Exercise."Women who consumed additional meat or took iron supplements were able to bounce back,"she notes."But the new exercisers who followed their normal diet showed a significant decrease in iron levels."Iron deficiency is very common among women in general,affecting one in four female teenagers and one in five women aged 18 to 45,respectively.But the ratio is even greater among active women,affecting up to 80 percent of female endurance athletes.This means,Lyle says,that"too many women ignore the amount of iron they take in."Women of childbearing age are at greatest risk,since their monthly bleeding is a major source of iron loss.Plus,many health-conscious women increase their risk by rejecting red meat,which contains the most easily absorbed form of iron.And because women often restrict their diet in an effort to control weight,they may not consume enough iron-rich food,and are liable to experience a deficiency."The average woman takes in only two thirds of the recommended daily allowance of iron," notes another expert."For a woman who already has a poor iron status,any additional iron loss from exercise may be enough to tip her over the edge into a more serious deficiency,"notes the expert. Exercise can result in iron loss through a variety of mechanisms.Some iron is lost in sweat,and,for unknown reasons,intense endurance exercise is sometimes associated with bleeding of the digestive system.The best sources of iron,and the only sources of the form of iron most readily absorbed by the body,are meat,chicken,and fish.Good sources of other forms of iron include dates,beans,and some leafy green vegetables.Who will show evidence of iron loss?A:Inactive women.B:Active women.C:Women who do a program of moderate exercises regularly.D:Women who are inactive and start to do moderate exercises.
共用题干第三篇Iron DeficienciesExperts have observed for years that endurance athletes,particularly females,frequently have iron deficiencies.Now a new study by a team of Purdue University researchers suggests that even moderate exercise may lead to reduced iron in the blood of women."We found that women who were normally inactive and then started a program of moderate exercise showed evidence of iron loss,"says Roseanne M.Lyle,associate professor at Purdue.Her study of 62 formerly inactive women who began exercising three times a week for six months was published in the journal Medicine & Science in Sports & Exercise."Women who consumed additional meat or took iron supplements were able to bounce back,"she notes."But the new exercisers who followed their normal diet showed a significant decrease in iron levels."Iron deficiency is very common among women in general,affecting one in four female teenagers and one in five women aged 18 to 45,respectively.But the ratio is even greater among active women,affecting up to 80 percent of female endurance athletes.This means,Lyle says,that"too many women ignore the amount of iron they take in."Women of childbearing age are at greatest risk,since their monthly bleeding is a major source of iron loss.Plus,many health-conscious women increase their risk by rejecting red meat,which contains the most easily absorbed form of iron.And because women often restrict their diet in an effort to control weight,they may not consume enough iron-rich food,and are liable to experience a deficiency."The average woman takes in only two thirds of the recommended daily allowance of iron," notes another expert."For a woman who already has a poor iron status,any additional iron loss from exercise may be enough to tip her over the edge into a more serious deficiency,"notes the expert. Exercise can result in iron loss through a variety of mechanisms.Some iron is lost in sweat,and,for unknown reasons,intense endurance exercise is sometimes associated with bleeding of the digestive system.The best sources of iron,and the only sources of the form of iron most readily absorbed by the body,are meat,chicken,and fish.Good sources of other forms of iron include dates,beans,and some leafy green vegetables.Which group of women will possibly have iron loss? A:one in four women aged 18 to 45.B:one in five female teenagers.C:80 percent of female endurance athletes.D:80 percent of active women.
Silver is the best conductor of electricity,copper__________it closely.A.followedB.followingC.to followD.being followed
Coal mining industry in Britain provides( )of the energy consumed in the country. A.one-third B.one-fourth C.one-fifth D.two-thirds
Ireland is one of the leading exporters of（）in Europe.Acoal and iron oreBsilver and goldCcopper and aluminumDlead and zinc
Which of the following is not included in dry bulk cargo?（）A、Grains.B、Iron ore.C、Cotton.D、Coal.
单选题Most conducting materials such as copper, aluminum, iron, nickel, and tungsten （）.Aincrease in resistance with increased temperatureBincrease in resistance with decreased temperatureCdecrease in resistance with increased temperatureDincrease in conductance with increased temperature
单选题Since fuse elements are made of zinc or any alloy of tin and lead, the melting point of the fuse element must be （）.Ahigher than that of copperBlower than that of copperCequal to that of copperDreached when the conductor it is protecting becomes white hot
单选题Which of the following statements represents the main difference between a relay and a contactor?（）AContactors control current and relays control voltageBA relay is series connected and a contactor is parallel connectedCContactors can handle heavier loads than relaysDContactors are made from silver and relays are made from copper
单选题The advertising industry in today’s world does have its share of responsibilities in leading people to misconceptions.Afor leading people toBto lead people toCto lead people intoDfor leading people into
单选题The main bearings are provided with thin-walled （）, lined with a copper-lead alloy.Asteel guidesBsteel shellsCsteel bearing capsDpig iron
单选题Ireland is one of the leading exporters of（）in Europe.Acoal and iron oreBsilver and goldCcopper and aluminumDlead and zinc
单选题A drift lead indicates that the vessel is dragging anchor when the line is（）.Ataut and leading forwardBslackCleading out perpendicular to the centerlineDleading under the hull