Bleeding from a vein may be ordinarily controlled by ______.A.applying direct pressure to the woundB.heavy application of a disinfectantC.pouring ice water directly onto the woundD.pinching the wound closed
Bleeding from a vein may be ordinarily controlled by ______.
A.applying direct pressure to the wound
B.heavy application of a disinfectant
C.pouring ice water directly onto the wound
D.pinching the wound closed
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We can inter from the passage that Chinese English__________ .A.is clear and natural to non-native speakersB.is vivid and direct to non-native speakersC.has a verv bad reputation in AmericaD.may bring inconvenience in America
Forces other than damaging winds are also at work inside tornadoes (龙卷风) . Sometimes,as the wind passes a house, the walls and ceiling burst apart as if a bomb had gone off inside. This explosion is caused by the low air pressure at the center of a tornado.The pressure at the center of a tornado is usually 13 pounds per square inch. However,inside the house the air pressure is normal, about 15 pounds per square inch.The difference of 2 pounds per square inch between the inside and outside pressure may not seem like much. But suppose a tornado passes over a small building that measures 20 by 10 by feet. On each square inch of the building, there is 2 pounds of pressure from the insidethat is not balanced by air pressure outside the building. On the ceiling, that adds up to an unbalanced pressure of 57600 pounds. The pressure of the four walls adds up to 172800 pounds.If windows are open in the building, some of the inside air will rush out through them.This will balance the pressure inside and outside the building.But if the windows are shut tightly, the huge inside pressure may cause the building to burst.Unfortunately, heavy rain often occurs in the storms that later produce tornadoes,so people often shut their windows. This may cause far worse damage later.21、 What did the paragraph before this passage most probably discuss?A、 Measuring rainfall from a stormB、 The kinds of damage caused by explosionsC、 The powerful winds of tornadoes22、 Which of the following is the main topic of the passage?A、 How tornadoes can be preventedB、 When tornadoes usually occurC、 Why tornadoes cause so much damage23、 Tornadoes can destroy buildings because the()A、 force of a tornado increases the air pressure in a buildingB、 air pressure inside a tornado is less than the air pressure inside a buildingC、 air pressure at the center of a tornado is over 172000 pounds24、 What is the difference per square inch between the air pressure inside a building and the air pressure inside a tornado?A、 2 poundsB、 13 poundsC、 15 pounds25、 What would happen if the windows are shut tightly in the stormy weather?A、 Tornadoes may be formedB、 The house may be apartC、 There may not be any pressure inside the building
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.
A low pressure annular preventer which is used to direct flow of kick fluids away from the rig floor is called a ______.A.dump valveB.deflectorC.separatorD.diverter
A person has suffered a laceration of the arm. Severe bleeding has been controlled by using a sterile dressing and direct pressure. What should you do next?A.Apply a tourniquet to prevent the bleeding from restartingB.Apply a pressure bandage over the dressingC.Remove any small foreign matter and apply antisepticD.Administer fluids to assist the body in replacing the lost blood
In the case of the leading marks，the master may ______ to show these in the bill of lading if the goods or their containers are not clearly marked in such a manner as should ordinarily remain legible until the end of the voyage．A.confuseB.excuseC.defuseD.refuse
Which two statements about configuration an unconnected Catalyst Express 500 switch from setup mode using a PC are true？（）A、You may use Cisco Network Assistant to set up the initial configurationB、You must use CLI for initial configurationC、You may use either CLI or CAN for configurationD、You may make a direct connection to the PC from any point on the switchE、You may only make a direct connection from the port with the flashing green LED to the PC
On which of the following database objects may the SELECT privilege be controlled?（）A、SequenceB、SchemaC、GroupD、View
单选题In a direct expansion type multi-box refrigeration system, the compressor is set up to cycle on and off by the（）ApressurestatBhigh pressure cutoutCsolenoid valveDlow pressure cutout switch
单选题The author states that the will and the passions of the people _____.Acan be effectively controlled by the people themselvesBshould determine government policiesCcan be controlled only by a power that exists apart from the people and is not subject to that will and those passionsDcannot be controlled
单选题If a cam-controlled engine has a normal injection pressure at rated speed,the injection pressure will be（）at slow speed.Aa little lowerBa little higherCtoo lowDexactly the same
单选题The domestic fresh water pump starters are controlled by pressure switches which operate when the pressure in the tank varies within predetermined limits as water is drawn offThe word “which” means （）.AstartersBpressure switchesCpressureDwater
单选题A tourniquet should be used to control bleeding ONLY（）.Awith puncture woundsBwhen all other means have failedCwhen the victim is unconsciousDto prevent bleeding from minor wounds
单选题A person has suffered a laceration of the arm. Severe bleeding has been controlled by using a sterile dressing and direct pressure. What should you do next? （）AApply a tourniquet to prevent the bleeding from restartingBApply a pressure bandage over the dressingCRemove any small foreign matter and apply antisepticDAdminister fluids to assist the body in replacing the lost blood.
单选题Outlets in gasoline fuel lines are（）.Apermitted for drawing fuel samplesBpermitted for draining fuel from linesCpermitted for bleeding air from linesDprohibited
单选题A low pressure annular preventer which is used to direct flow of kick fluids away from the rig floor is called a （）.Adump valveBdeflectorCseparatorDdiverter
单选题The direction of the surface wind is（）.Adirectly from high pressure toward low pressureBdirectly from low pressure toward high pressureCfrom high pressure toward low pressure deflected by the earth's rotationDfrom low pressure toward high pressure deflected by the earth's rotation
单选题Aburned exhaust valve may be detected by a higher than normal （）Afiring pressureBexhaust temperature from a particular cylinderCcooling water temperatureDcompression pressure
单选题If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because the （）.Acylinder compression pressure may not be high enoughBcylinder compression temperature may be too highCfuel oil injection pressure may not be high enoughDscavenge and purge process is incomplete
单选题Bleeding from a vein is（）.Adark red and has a steady flowBbright red and slowCbright red and spurtingDdark red and spurting
单选题A person has suffered a laceration of the arm. Severe bleeding has been controlled by using a sterile dressing and direct pressure. What should you do next?（）AApply a tourniquet to prevent the bleeding from restartingBApply a pressure bandage over the dressingCRemove any small foreign matter and apply antisepticDAdminister fluids to assist the body in replacing the lost blood
单选题While troubleshooting a refrigeration system for low head pressure, liquid refrigerant flooding back from the evaporator is determined to be the causeIt may be necessary to （）.Achange the expansion valve adjustmentBreadjust the water regulating valve to increase the flow of waterCpurge air from the condenserDclean the waterside of the condenser
单选题There shall be（）into sleeping rooms from cargo and machinery spaces or from galleys,storerooms,drying rooms or communal sanitary areas.Ano direct openingsBdirect openingsCno more than one direct openingDup to one direct opening
单选题A common rail engine has only one or two high pressure pumps in operation at the same（）time, and the injection into each cylinder.Acan’t be controlled very preciselyBcan’t be controlled as flexibly as the separate pump systemCcan be controlled as flexibly as the separate pump systemDcan be controlled more precisely and flexibly
单选题In all but the most severe cases，bleeding from a wound should be controlled by（）.Aapplying direct pressure to the woundBsubmerging the wound in lukewarm waterCcooling the wound with iceDapplying a tourniquet
单选题The preferred method of controlling external bleeding is by（）.Adirect pressure on the woundBelevating the wounded areaCpressure on a pressure pointDa tourniquet above the wound
单选题Bleeding from a vein may be ordinarily controlled by（）.Aapplying direct pressure to the woundBheavy application of a disinfectantCpouring ice water directly onto the woundDpinching the wound closed