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Which of the following is not true of British iron and steel industry?（）
- A、Britain.s steel industry is declining.
- B、No more new discoveries of iron ore have been found in Britain.
- C、Supplies of iron ore are now mostly foreign.
- D、Compared with newer plants in the world,Britain.s steelworks are not efficient.
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更多 “Which of the following is not true of British iron and steel industry?（）A、Britain.s steel industry is declining.B、No more new discoveries of iron ore have been found in Britain.C、Supplies of iron ore are now mostly foreign.D、Compared with newer plants in the world,Britain.s steelworks are not efficient.” 相关考题
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Permanent magnetism is found in ______.A.hard ironB.soft ironC.vertical iron onlyD.horizontal iron only
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A vessel loads 5000 tons of manganese ore. The railroad cars that brought the ore to the vessel were previously loaded with iron ore so the ore is contaminated. The agent requests the Master to sign a Clean Bill of Lading and in return the shipper willA.Sign a Clean Bill of Lading and accept the Letter of IndemnityB.Refuse to sign a Clean Bill of LadingC.Sign the Clean Bill of Lading and have the agent countersign itD.Sign a Clean Bill of lading under protest
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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.
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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.
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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.According to experts who will possibly have iron deficiencies?A:High jump athletes. B:Weight-lifters.C:Marathoners. D:Sprinters.
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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.
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Many people are willing to pay considerably more for tools hand-crafted by a blacksmith than for tools created by a machine.B
Blacksmiths cannot produce iron products with the speed or consistency of machines.C
Blacksmiths traditionally apprenticed to a master blacksmith for seven or more years before entering business independently.D
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As skilled craftsmen, blacksmiths traditionally served as community leaders throughout North America and Europe.
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cast iron has weaknessB
cast iron can stand up shock loadingC
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east iron fittings are not suitable in low pressure situation
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单选题Wrought iron has an inherent resistance to corrosion but is not to be had freely , its place has been taken by the cuprous alloysAccording to the above sentence , which of the following statements is true?（）A
Wrought iron can resist liquids flowB
It is difficult to attain the wrought ironC
Wrought iron should be combined with cuprous alloysD
The cuprous alloys have mere disadvantages than wrought iron
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单选题Induced magnetism is found in（）.A
hard ironB
soft ironC
vertical iron onlyD
horizontal iron only
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单选题The permanent magnetism of a vessel may change in polarity due to（）.A
being moored for a long time on one headingB
being struck by lightingC
steaming from the north magnetic hemisphere to the south magnetic hemisphereD
loading a homogenous magnetic cargo such as steel plate，iron bars，etc
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单选题"Cast iron has poor corrosion resistance to sea water, especially in the presence of bronzes" Implies（）.A
east iron is a cheap materialB
cast iron can pollute sea waterC
cast iron has mere corrosive than bronzes to sea waterD
cast iron is more corrosive to sea water when it meets with bronzes
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单选题Cast iron and gunmetal fittings are used freely in small sizes at moderate pressure; large fittings, those for high pressure and temperature are cast or mild steelIn the above sentence, the word “those” means （）.A
east iron firingsB
mild steel fittingsC
small fittingsD
large fittings
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单选题An aluminum piston has lower inertia and higher coefficient of （） compared to that of cast iron.A
viscosityB
twisting momentsC
inertiaD
thermal expansion
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Sony is making a new effort for more technological and marketing innovations.B
Its revenue and profits have improved recently.C
Sony is trying to make friends with Microsoft, another player in this industry.D
Microsoft has been making computer games for the last 20 years.
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单选题Aluminum lifeboats are subject to damage by electrolytic corrosion (the aluminum being eaten away). In working around boats of aluminum you must be very careful（）.A
to keep the boats covered at all timesB
not to leave steel or iron tools lying in or near these boatsC
to keep an electric charge on the hull at all timesD
to rinse these boats regularly with salt water
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单选题A vessel loads 5000 tons of manganese ore. The railroad cars that brought the ore to the vessel were previously loaded with iron ore so the ore is contaminated. The agent requests the Master to sign a Clean Bill of Lading and in return the shipper will give him a Letter of Indemnity. What is the best procedure to follow? （）A
Sign a Clean Bill of Lading and accept the Letter of IndemnityB
Refuse to sign a Clean Bill of LadingC
Sign the Clean Bill of Lading and have the agent countersign itD
Sign a Clean Bill of lading under protest
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单选题Cold clearances between the skirt of an aluminum piston and the cylinder liner is about （）A
twice as large as with a cast iron pistonB
the same size as with a cast iron pistonC
half as large as with a cast iron pistonD
the same size as the crown of an aluminum piston
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单选题Which of the following is not true of British iron and steel industry?（）A
Britain.s steel industry is declining.B
No more new discoveries of iron ore have been found in Britain.C
Supplies of iron ore are now mostly foreign.D
Compared with newer plants in the world,Britain.s steelworks are not efficient.
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