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If people are exposed to red，which of the following statements does not happen?
A. They breathe faster.
B. Their blood pressure rises.
C. They feel afraid.
D. Their hearts beat faster.
参考答案
更多 “ If people are exposed to red，which of the following statements does not happen?A. They breathe faster.B. Their blood pressure rises.C. They feel afraid.D. Their hearts beat faster. ” 相关考题
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Text 3Under certain circumstances, the human body must cope with gases at greater-than-normal atmospheric pressure. For example, gas pressures increase rapidly during a dive made with scuba gear because the breathing equipment allows divers to stay underwater longer and dive deeper.The pressure exerted on the human body increases by 1 atmosphere for every 10 meters of depth in seawater, so that at 30 meters in seawater a diver is exposed to a pressure of about 4 atmospheres. The pressure of the gases being breathed must equal the external pressure applied to the body, otherwise breathing is very difficult. Therefore all of the gases in the air breathed by a scuba diver at 40 meters are present at five times their usual pressure. Nitrogen, which composes 80 per cent of the air we breathe, usually causes a balmy feeling of well-being at this pressure. At a depth of 5 atmospheres, nitrogen causes symptoms resembling alcohol intoxication, known as nitrogen narcosis. Nitrogen narcosis apparently results from a direct effect on the brain of the large amounts of nitrogen cause under these pressurized helium does not exert a similar narcotic effect.As a scuba diver descends, the pressure of nitrogen in the lungs increases. Nitrogen then diffuses from the lungs to the blood, and from the blood to body tissues. The reverse occurs when the diver surfaces; the nitrogen pressure in the lungs falls and the nitrogen diffuses from the tissues into the blood, and from the blood into the lungs. If the return to the surface is too rapid, nitrogen in the tissues and blood cannot diffuse out rapidly enough and nitrogen bubbles are formed. They can cause severe pains, particularly around the joints.Another complication may result if the breath is held during ascent. During ascent from a depth of 10 meters, the volume of air in the lungs will double because the air pressure at the surface is only half of what it was at 10 meters. This change in volume may cause the lungs to distend and even rupture. This condition is called air embolism. To avoid this event, a diver must ascend slowly, never at a rate exceeding the rise of the exhaled air bubbles, and must exhale during as- cent.31. What does the passage mainly discuss?A) The equipment divers use.B) The effects of pressure on gases in the human body.C) How to prepare for a deep dive.D) The symptoms of nitrogen bubbles in the bloodstream.
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In Chinese when someone breaks a bowl or a plate, the host or the people present are likely to say ---碎碎（岁岁平安）as a means of controlling the forces which they believe feel might affect their lives. Which function does it perform?A.Interpersonal
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The traffic lights were red when the driver reached them．To the surprise of his passenger,the ear did not slow down．Unexpectedly the passenger was thrown forward in the vehicle as the driver put on his brakes at the last moment．The car stopped just in time.
"Sorry,I didn't notice the light．I thought it was green until I saw that it was the top light which was shining."
This strange story is quite true．About ten men in every hundred are color blind in some way;women are luckier--only about one in two hundred suffers from color blindness.
In some cases,a man may not be able to see deep red．He may think that red,orange and yellow are all the same as green.
People often like one color more than others．Blue is the color of the sky and sea．Green makes us think of fields and trees．Red is the color of blood and makes some people think of danger．Black is the color of night．In the dark we cannot see what is around us so we are sometimes afraid of the unknown and do not like black as a color.
According to the passage,which of the following statements is true?A.Black stands for unhappines
B.Black makes people think of nigh
C.Black makes people think of sorro
D.Black is the color of the mournin
考题
D
The Red Cross is an international organization which cares for people who are in need of help.A man in Paris hospital who needs blood，a woman in Mexico who was injured in an earthquake，and a family in India that lost their home in a storm may all be aided by the Red Cross.
The Red Cross exists in almost every country around the globe.The world Red Cross organizations are sometimes called the Red Crescent，the Red Mogen David，the Sun，and the Red Lion.All of these agencies share a common goal of trying to help people in need.
The idea of forming an organization to help the sick and wounded during a war started with Jean Henri Dunant.In 1859，he observed how people were suffering on a battle field in Italy.He wanted to help all the wounded people regardless of which side they were fighting for.The most important result of his work was an international treaty called the Geneva Convention.It protects prisoners of way the sick and wounded，and other citizens during a war.
The American Red Cross was set up by Clara Barton in 1881.Today the Red Cross in the United States provides a number of services for the public，such as helping people in need，teaching first aid and providing blood.
A good title for this selection is_______.A.People in Need of Help
B.Safety and Protection
C.The International Red Cross
D.Forming an Organization to Help People
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单选题Which of the following statements represents the advantage of rotary pumps as compared to reciprocating pumps?（）A
The high discharge pressure of the rotary pumps permits a larger volume of fluid per unit time than the reciprocating pumpB
Rotary pumps are capable of pumping more fluid than reciprocating pumps of the same weightC
Rotary pumps occupy only one-half the space of reciprocating pumpsD
Rotary pumps eliminate discharge slippage of the pumped liquid, while this does not hold true for a reciprocating pump
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单选题If the turbocharger of a four-stroke/cycle diesel engine fails to operate, which of the following statements best describes the probable effect?（）A
Intake manifold pressure will be highB
Intake manifold pressure will be unaffectedC
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Exhaust temperatures will be low
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单选题In which of the following year did September 11 Attacks happen in the United States and kill more than 3,000 people?A
2000B
2001C
2002D
2003
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单选题Which of the following statements is true according to the passage?A
Many people protested in the past six months.B
Many people threw tomatoes at the German Chancellor.C
Many people threw eggs at an important member of the German Chancellor’s Social Democrats.D
Many people threw eggs at the German Chancellor, but he was not hit.
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High blood pressure is caused by angerB
Angry people cannot express themselves reasonablyC
Anger is harmful to one’s healthD
Doctors in the past would advise people to express anger freely
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单选题Seamless mild steel is used for steam (also copper for moderate pressure and temperature), h-pair, feed discharge and all oil fuel pressure pipingsAccording to the above sentence, which of the following statements is not true?（）A
Both seamless mild steel and copper may be used for middle pressure steamB
hpair means high pressure airC
The feed piping of the boilers can be made of seamless mild steelD
All oil pipings are made of mild steel
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单选题Which of the following statements is true concerning an oil cooler?（）A
The oil temperature is less than the cooling water temperatureB
The oil pressure is less than the cooling water pressureC
The oil pressure is greater than the cooling water pressureD
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单选题Which of the following statements is correct regarding a turbocharged four-stroke/cycle diesel generator?（）A
At zero load the intake manifold pressure is greater than the exhaust manifold pressureB
At full load the intake manifold pressure and exhaust manifold pressure are equalC
At full load the intake manifold pressure is less than the exhaust manifold pressureD
At full load the intake manifold pressure is greater than the exhaust manifold pressure
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单选题Which of the following is true about the immunity to HIV?A
It is partly resistance to the mutation.B
More Europeans have it than the people on other continents.C
It is the result of outbreaks of the plague.D
It is a mutation that protects white blood cells.
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单选题Which of the following statements is true concerning any evaporator?（）A
High conductivity of the distillate indicates distillate salinity is excessiveB
Increasing the absolute pressure of the shell will increase the distillers capacityC
Mesh separators are used in evaporators to filter the distillateD
Reducing the brine density will reduce the heat lost overboard
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单选题Which of the following statements describes the function of an expansion tank in a diesel engine cooling system?（）A
Maintains a constant head on the systemB
Reduces the likelihood of air or steam pockets formationC
Provides a low pressure point for the addition of makeup cooling waterD
All of the above
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单选题With reference to a rotary vane steering gear system, which one of the following statements is true?（）A
The three moving vanes and the three fixed vanes form three pressure chambersB
The three moving vanes and the three fixed vanes form six pressure chambersC
The three moving vanes and the three fixed vanes form nine pressure chambersD
The three moving vanes and the three fixed vanes form twelve pressure chambers
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