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[主观题]

Open ____, a widely used practice to make payment in U.S.A., is used less ofteninternationally, because it is unpopular among the exporters in foreign countries.

A.insurance

B.L/C

C.D/A

D.account

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更多“Open ____, a widely used pract…”相关的问题

第1题

How can nanotechnology be used to make a drug more effective?

A．By making a drug target the locus of a disease.

B．By changing the structure of the body cells.

C．By lowering the side effects caused by a drug.

D．By letting a patient take a dose as large as possible.

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第2题

How can nanotechnology be used to make a drug more effective?

A．By making a drug target the focus of a disease．

B．By changing the structure of the body cells．

C．By lowering the side effects caused by a drug．

D．By letting a patient take a dose as large as possible．

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第3题

How can nanotechnology be used to make a drug more effective?

A．By making a drug target the focus of a disease．

B．By changing the structure of the body cells．

C．By lowering the side effects caused by a drug．

D．By letting a patient take a dose as large as possible．

点击查看答案

第4题

How can nanotechnology be used to make a drug more effective?

A By making a drug target the focus of a disease.

B By changing the structure of the body cells.

C By lowering the side effects caused by a drug.

D By letting a patient take a dose as large as possible.

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第5题

According to the author, at a big party, small talk is used with the purpose of ______.

A．keeping your voice low so only your friends can hear you

B．excluding those you don't like from joining you

C．making both others and yourself feel at ease

D．comforting those who feel lonely

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第6题

听力原文： A key component in the explosives used in last week's London bombings is triacetone triperoxide (TATP), a U. S. law enforcement officiaI tells U. S. News. TATP is a sophisticated or "high yieldS' explosive that's easily mixed at home with recipes available on the Internet.

It was used by suicide bombers in Israel and chosen as a detonator in 2001 by would-be shoe bomber Richard Reid. Reid, who attempted to bomb a plane as it crossed the Atlantic Ocean, has claimed he used an Internet recipe to make his sneaker bomb. The ingredients in TATP—hydrogen peroxide obtained from local pharmacies, the paint thinner acetone, and a little hydrochloric or sulphuric acid—can be mixed to manufacture TATP, which packs the same punch as plastic explosives such as RDX. TATP, used by terrorists in the Middle East and elsewhere; is considered so unstable that it can be set off by clapping one's hands to detonate it or stomping on it with one's foot and usually is used with other ingredients as a booster or detonator component.

What is the feature of TATP?

A．It is an simple explosive

B．It is a military explosive

C．It is made in U. S factories

D．It can be easily made indoors

点击查看答案

第7题

听力原文： A key component in the explosives used in last week's London bombings is triacetone triperoxide (TATP), a U.S. law enforcement official tells U.S. News. TATP is a sophisticated or "high yield" explosive that's easily mixed at home with recipes available on the Internet.

It was used by suicide bombers in Israel and chosen as a detonator in 2001 by would-be shoe bomber Richard Reid. Reid, who attempted to bomb a plane as it crossed the Atlantic Ocean, has claimed he used an Internet recipe to make his sneaker bomb. The ingredients in TATP---hydrogen peroxide obtained from local pharmacies, the paint thinner acetone, and a little hydrochloric or sulphuric acid ----can be mixed to manufacture TATP, which packs the same punch as plastic explosives such as RDX. TATP, used by terrorists in the Middle East and elsewhere, is considered so unstable that it can be set off by clapping one's hands to detonate it or stomping on it with one's foot and usually is used with other ingredients as a booster or detonator component.

What is the feature of TATP?

A．It is an simple explosive.

B．It is a military explosive.

C．It is made in U.S. factories.

D．It can be easily made indoors.

点击查看答案

第8题

What do people usually think a dictionary is used for according to the speaker?

A．Finding the part of speech of a word.

B．Finding what a word means.

C．Finding how to spell a word.

D．Finding how to pronounce a word.

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第9题

It was used by suicide bombers in Israel and chosen as a detonator in 2001 by would-be shoe bomber Richard Reid. Reid, who attempted to bomb a plane as it crossed the Atlantic Ocean, has claimed he used an Interact recipe to make his sneaker bomb. The ingredients in TATP--hydrogen peroxide obtained from local pharmacies, the paint thinner acetone, and'a little hydrochloric or sulphuric acid--can be mixed to manufacture TATR which packs the same punch as plastic explosives such as RDX. TATP, used by terrorists in the Middle East and elsewhere, is considered so unstable that it can be set off by clapping one's hands to detonate it or stomping on it with one's foot and usually is used with other ingredients as a booster or detonator component.

What is the feature of TATP?

A．It is an simple explosive.

B．It is a military explosive.

C．It is made in U.S. factories.

D．It can be easily made indoors.

点击查看答案

第10题

Thousands of years ago man used handy rocks for his surgical operations. Later he used sharp bone or horn, metal knives and more recently, rubber and plastic and that was where we stuck, in surgical instrument terms, for many years. In the 1960s a new tool was developed, one which was, first of all, to be of great practical use to the armed forces and industry, but which was also, in time, to revolutionize the art and science of surgery.

The tool is the laser and it is being used by more and more surgeons all over the world, for a very large number of different complaints. The word "laser" means: light amplification by stimulated emission of radiation. As we all know, light is hot, any source of light -- from the sun itself down to a humble match burning -- will give warmth. But light is usually spread out over a wide area. The light in a laser beam, however, is concentrated. This means that a light with no more power than that produced by an ordinary electric light bulb becomes intensely strong as it is concentrated to a pinpoint-sized beam.

Experiments with these pinpoint beams showed researchers that different energy sources produce beams that have a particular effect on certain living cells. It is now possible for eye surgeons to operate on the back of the human eye without harming the front of the eye, simply by passing a laser beam right through the eyeball. No knives, no stitches, no unwanted damage -- a true surgical wonder. Operations which once left patients exhausted and in need of long period of recovery time now leave them feeling relaxed and comfortable. So much more difficult operations can now be tried.

The rapid development of laser techniques in the past ten years has made it clear that the future is likely to be very exciting. Perhaps some cancers will be treated with laser in a way that makes surgery not only safer but also more effective. Altogether, tomorrow may see more and more information coming to light on the diseases which can be treated medically.

Which of the following would be appropriate to describe the instruments for surgical operations up until 1960s?

A．Traditional.

B．Complicated.

C．Remarkable.

D．Revolutionary.

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