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（） is to get the materials and services from a company.
- A、Ordering
- B、Procurement
- C、Purchasing
- D、Application
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更多 “（） is to get the materials and services from a company.A、OrderingB、ProcurementC、PurchasingD、Application” 相关考题
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A. get rid to;B. get rid ofC. get the ridD. give rid of
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When did women begin leaving their homes to get jobs in the U.S.?_________________________________________________
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Does modern logistics mean transportation and delivery?()Modern logistics is more about effective and efficient flow of materials and information.A、 Yes, you’re rightB、 No, it’s not the whole storyC、 No, you' re wrong
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Numerous materials are available to ______.
Atoday of designersBtoday’s of designersCtoday’s designersDtoday designers
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Which of the following materials is not appropriate for a teacher to use in listening practice?A.Materials with different dialects.
B.Comprehensible authentic materials.
C.Materials with comprehensible new words for students.
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New Understanding of Natural Silk's MysteriesNatural silk,as we all know,has a strength that man-made materials have long struggled to match.In a discovery that sounds more like an ancient Chinese proverb than a materials science breakthrough,MIT re- searchers have discovered that silk gets its strength from its weakness.Or,more specifically,its many weak- nesses. Silk gets its extraordinary durability and ductility（柔韧性）from an unusual arrangement of hydrogen bonds that are intrinsically very weak but that work together to create a strong,flexible structure.Most materials一especially the ones we engineer for strength一get their toughness from brittleness.As such,natural silks like those produced by spiders have long fascinated both biologists and engineers because of their light weight,ductility and high strength(pound for pound,silk is stronger than steel and far less brittle). But on its face,it doesn't seem that silks should be as strong as they are;molecularly,they are held together by hydrogen bonds , which are far weaker than the covalent（共价的）bonds found in other molecules.To get a better understanding of how silk manages to produce such strength through such weak bonds, the MIT team created a set of computer models that allowed them to observe the way silk behaves at the atomic level. They found that the arrangement of the tiny silk nanocrystals（纳米晶体）is such that the hydro- gen bonds are able to work cooperatively,reinforcing one another against external forces and failing slowlywhen they do fail,so as not to allow a sudden fracture to spread across a silk structure.The result is natural silks that can stretch and bend while retaining a high degree of strength.But while that's all well and good for spiders,bees and the like,this understanding of silk geometry could lead to new materials that are stronger and more ductile than those we can currently manufacture.Our best and strongest materials are generally expensive and difficult to produce(requiring high temperature treatments or energy-intensive processes).By looking to silk as a model,researchers could potentially devise new manufacturing methods that rely on inexpensive materials and weak bonds to create less rigid,more forgiving materials that are nonetheless stronger than anything currently on offer. And if you thought you were going to get out of this materials science story without hearing about carbon nanotubes（纳米碳管）, think again. The MIT team is already in the lab looking into ways of synthesizing silk-like structures out of materials that are stronger than natural silk-like carbon nanotubes. Super-silks are on the horizon.If the hydrogen bonds break due to external forces,they break fast.A:RightB:WrongC:Not mentioned
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共用题干
New Understanding of Natural Silk's MysteriesNatural silk,as we all know,has a strength that man-made materials have long struggled to match.In a discovery that sounds more like an ancient Chinese proverb than a materials science breakthrough,MIT re- searchers have discovered that silk gets its strength from its weakness.Or,more specifically,its many weak- nesses. Silk gets its extraordinary durability and ductility（柔韧性）from an unusual arrangement of hydrogen bonds that are intrinsically very weak but that work together to create a strong,flexible structure.Most materials一especially the ones we engineer for strength一get their toughness from brittleness.As such,natural silks like those produced by spiders have long fascinated both biologists and engineers because of their light weight,ductility and high strength(pound for pound,silk is stronger than steel and far less brittle). But on its face,it doesn't seem that silks should be as strong as they are;molecularly,they are held together by hydrogen bonds , which are far weaker than the covalent（共价的）bonds found in other molecules.To get a better understanding of how silk manages to produce such strength through such weak bonds, the MIT team created a set of computer models that allowed them to observe the way silk behaves at the atomic level. They found that the arrangement of the tiny silk nanocrystals（纳米晶体）is such that the hydro- gen bonds are able to work cooperatively,reinforcing one another against external forces and failing slowlywhen they do fail,so as not to allow a sudden fracture to spread across a silk structure.The result is natural silks that can stretch and bend while retaining a high degree of strength.But while that's all well and good for spiders,bees and the like,this understanding of silk geometry could lead to new materials that are stronger and more ductile than those we can currently manufacture.Our best and strongest materials are generally expensive and difficult to produce(requiring high temperature treatments or energy-intensive processes).By looking to silk as a model,researchers could potentially devise new manufacturing methods that rely on inexpensive materials and weak bonds to create less rigid,more forgiving materials that are nonetheless stronger than anything currently on offer. And if you thought you were going to get out of this materials science story without hearing about carbon nanotubes（纳米碳管）, think again. The MIT team is already in the lab looking into ways of synthesizing silk-like structures out of materials that are stronger than natural silk-like carbon nanotubes. Super-silks are on the horizon.It is indicated that materials stronger than natural silk can be expected in the future.A:RightB:WrongC:Not mentioned
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共用题干
New Understanding of Natural Silk's MysteriesNatural silk,as we all know,has a strength that man-made materials have long struggled to match.In a discovery that sounds more like an ancient Chinese proverb than a materials science breakthrough,MIT re- searchers have discovered that silk gets its strength from its weakness.Or,more specifically,its many weak- nesses. Silk gets its extraordinary durability and ductility（柔韧性）from an unusual arrangement of hydrogen bonds that are intrinsically very weak but that work together to create a strong,flexible structure.Most materials一especially the ones we engineer for strength一get their toughness from brittleness.As such,natural silks like those produced by spiders have long fascinated both biologists and engineers because of their light weight,ductility and high strength(pound for pound,silk is stronger than steel and far less brittle). But on its face,it doesn't seem that silks should be as strong as they are;molecularly,they are held together by hydrogen bonds , which are far weaker than the covalent（共价的）bonds found in other molecules.To get a better understanding of how silk manages to produce such strength through such weak bonds, the MIT team created a set of computer models that allowed them to observe the way silk behaves at the atomic level. They found that the arrangement of the tiny silk nanocrystals（纳米晶体）is such that the hydro- gen bonds are able to work cooperatively,reinforcing one another against external forces and failing slowlywhen they do fail,so as not to allow a sudden fracture to spread across a silk structure.The result is natural silks that can stretch and bend while retaining a high degree of strength.But while that's all well and good for spiders,bees and the like,this understanding of silk geometry could lead to new materials that are stronger and more ductile than those we can currently manufacture.Our best and strongest materials are generally expensive and difficult to produce(requiring high temperature treatments or energy-intensive processes).By looking to silk as a model,researchers could potentially devise new manufacturing methods that rely on inexpensive materials and weak bonds to create less rigid,more forgiving materials that are nonetheless stronger than anything currently on offer. And if you thought you were going to get out of this materials science story without hearing about carbon nanotubes（纳米碳管）, think again. The MIT team is already in the lab looking into ways of synthesizing silk-like structures out of materials that are stronger than natural silk-like carbon nanotubes. Super-silks are on the horizon.Silk's strength comes from its weak hydrogen bonds working together.A:RightB:WrongC:Not mentioned
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— Can I help you to get it down? — （）ANo problemBYes. Let’s get itCThanks. It’s so nice of youDIt’s no trouble at all
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语句（）能正确完成赋字符串的功能。A、chars[4]；s[0]=“string”B、char*s；get（s）C、char*s[]=“string”D、char*s；strcpy（s，“string”）
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单选题Deviation in a compass is caused by the（）.A
vessel's geographic positionB
vessel's headingC
earth's magnetic fieldD
influence of the magnetic materials of the vessel
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单选题I'm getting tired----it's time_______.A
we got some restB
we get some restC
we are getting some restD
we must get some rest
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单选题— Can I help you to get it down? — （）A
No problemB
Yes. Let’s get itC
Thanks. It’s so nice of youD
It’s no trouble at all
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单选题The expenses for the loading of trucks and heavy cargo and the necessary materials for lashing thereof will be charged to（）account.A
the supercargo'sB
the shipper'sC
the shipowner'sD
carrier's
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单选题By saying “raw materials do not exist, they are created” the author means _____.A
that there will be no more raw materials on the earth some time later, and man will have to create materials by themselvesB
that it is use that makes raw materials valuableC
that people have created various useful materials by using their intelligence and wisdomD
human creativity is amazing
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单选题Which of the following statements is INCORRECT?A
Generally speaking, almost all of the clerks get along well with their colleagues.B
It’s impossible to oppress one’s bad temper while being passionate on one’s work.C
People tend to get angry at work in many situations.D
People in companies welcome rage.
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单选题A note in the pocket can hardly serve as a reminder because _____.A
it will easily get lostB
it’s not clear enough for you to readC
it’s out of your sightD
it might get mixed up with other things
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单选题_____A
He’s trying to get out of the window.B
He’s helping Freud.C
He’s breaking into a house.D
He’s leaving by the front door.
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单选题Those who regard natural resources as stacks of raw materials piled up in a storehouse believe that _____.A
the earth’s natural resources will one day be exhaustedB
the earth’s natural resources will not run out since there are numerous storehousesC
the stacks of raw materials can always be renewedD
the stacks of raw materials should be used in a logical way
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单选题The watches and the the camera materials were not stowed in the poop cabin. They were stowed in the chief officer’s cabin（）.A
insteadB
instead ofC
replaceD
replace of
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