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共用题干
What is the Coolest Gas in the Universe?
What is the coldest air temperature ever recorded on Earth?Where was this low temperature recorded ?
The coldest recorded temperature on Earth was －91℃, which_____ (51) in Antarctica（南极洲）
in 1983.
We encounter an interesting situation when we discuss temperatures in_________(52).Temperatures
in Earth orbit（轨道）actually range from about +120℃ to －120℃. The temperature depends upon
______(53)you are in direct sunlight or in shade.Obviously，－120℃ is colder than our body can
________ (54)endure.
The space temperatures just discussed affect only our area of the solar________(55).Obviously,it
is hotter closer to the Sun and colder as we travel__________(56)from the Sun,Scientigtg egtimate tern-
peratures at Pluto are about －210℃．How cold is the lowest estimated temperature in the entire universe?
Again,it depends upon your_________(57).We are taught it is supposedly__________(58)to have a
temperature below absolute zero,which is－273℃，at which atoms do not move.Two scientists,Cornell
and Wieman,have successfully______(59)down a gas to a temperature barely above absolute zero.
They won a Nobel Prize in Physics in 2001 for their work一not a discovery in this case.
Why is the two scientists'work so important to science?
In the 1920s，Satyendra Nath Bose was studying an interesting_______(60)about special light par-
tidles（微粒）we now call photons（光子）.Bose had trouble __________(61)other scientists to believe his
theory,so he contacted Albert Einstein. Einstein’s calculations helped him theorize that atoms_______(62)
behave as Bose thought一but only at very cold temperatures.
Scientists have also discovered that ultra-cold（超冷）atoms can help them make the world'S atomic
clocks even__________(63)accurate.These clocks are so accurate today they would oniy lose one second
_________ (64)six million years!Such accuracy will help us travel in space because digtanee is velocity
（速度）times time( d=vt).With the long distances involved in space _______(65),we need to know
time as accurately as possibie to get accurate distance.
What is the Coolest Gas in the Universe?
What is the coldest air temperature ever recorded on Earth?Where was this low temperature recorded ?
The coldest recorded temperature on Earth was －91℃, which_____ (51) in Antarctica（南极洲）
in 1983.
We encounter an interesting situation when we discuss temperatures in_________(52).Temperatures
in Earth orbit（轨道）actually range from about +120℃ to －120℃. The temperature depends upon
______(53)you are in direct sunlight or in shade.Obviously，－120℃ is colder than our body can
________ (54)endure.
The space temperatures just discussed affect only our area of the solar________(55).Obviously,it
is hotter closer to the Sun and colder as we travel__________(56)from the Sun,Scientigtg egtimate tern-
peratures at Pluto are about －210℃．How cold is the lowest estimated temperature in the entire universe?
Again,it depends upon your_________(57).We are taught it is supposedly__________(58)to have a
temperature below absolute zero,which is－273℃，at which atoms do not move.Two scientists,Cornell
and Wieman,have successfully______(59)down a gas to a temperature barely above absolute zero.
They won a Nobel Prize in Physics in 2001 for their work一not a discovery in this case.
Why is the two scientists'work so important to science?
In the 1920s，Satyendra Nath Bose was studying an interesting_______(60)about special light par-
tidles（微粒）we now call photons（光子）.Bose had trouble __________(61)other scientists to believe his
theory,so he contacted Albert Einstein. Einstein’s calculations helped him theorize that atoms_______(62)
behave as Bose thought一but only at very cold temperatures.
Scientists have also discovered that ultra-cold（超冷）atoms can help them make the world'S atomic
clocks even__________(63)accurate.These clocks are so accurate today they would oniy lose one second
_________ (64)six million years!Such accuracy will help us travel in space because digtanee is velocity
（速度）times time( d=vt).With the long distances involved in space _______(65),we need to know
time as accurately as possibie to get accurate distance.
_________(53)
A:whether
B:where
C:what
D:when
A:whether
B:where
C:what
D:when
参考答案
参考解析
解析：最低温度这种现象只能发生（occur)，而不能是其他的行为；而且which在此句中作指 物的主语时，其谓语只能用不及物动词。
由第三段的第一句话可知，此处填“space”与其对应。
由后面的or可知选whether , whether...or…是固定搭配，意为“是······还是······“。
身体只能为是否“安全地”承受，而不是“悲伤地’，、“重复地”、“自由地”承受。
solar system是专有名词，意为“太阳系”。
travel away是“远离”的意思，由句子中的比较关系可知，此处是指远离太阳。
由前面的离太阳近，温度高，反之亦然，可知此处指你所处的位置不同，温度高低也不同。
按常识来讲，在－273℃原子能动是不可能的。
cool down是固定短语，意为“冷却”。
由本段中第二句的“his theory”可知此处应填与之对应的“t1tneory” 。
Bose只能是“使别人信服”他的理论，而不能“迫使”、“请求”、“命令”。
would在此表示推测，意为“大概，会”。
even more修饰accurate，表示更加精确。
every＋时间段，表示“每······时间”。此外表示“每6百万年”。
只有旅行（travel）才能与距离相关，所以此处的"space travel”指太空旅行。
由第三段的第一句话可知，此处填“space”与其对应。
由后面的or可知选whether , whether...or…是固定搭配，意为“是······还是······“。
身体只能为是否“安全地”承受，而不是“悲伤地’，、“重复地”、“自由地”承受。
solar system是专有名词，意为“太阳系”。
travel away是“远离”的意思，由句子中的比较关系可知，此处是指远离太阳。
由前面的离太阳近，温度高，反之亦然，可知此处指你所处的位置不同，温度高低也不同。
按常识来讲，在－273℃原子能动是不可能的。
cool down是固定短语，意为“冷却”。
由本段中第二句的“his theory”可知此处应填与之对应的“t1tneory” 。
Bose只能是“使别人信服”他的理论，而不能“迫使”、“请求”、“命令”。
would在此表示推测，意为“大概，会”。
even more修饰accurate，表示更加精确。
every＋时间段，表示“每······时间”。此外表示“每6百万年”。
只有旅行（travel）才能与距离相关，所以此处的"space travel”指太空旅行。
更多 “共用题干 What is the Coolest Gas in the Universe?What is the coldest air temperature ever recorded on Earth?Where was this low temperature recorded ?The coldest recorded temperature on Earth was －91℃, which_____ (51) in Antarctica（南极洲） in 1983.We encounter an interesting situation when we discuss temperatures in_________(52).Temperatures in Earth orbit（轨道）actually range from about +120℃ to －120℃. The temperature depends upon ______(53)you are in direct sunlight or in shade.Obviously，－120℃ is colder than our body can ________ (54)endure.The space temperatures just discussed affect only our area of the solar________(55).Obviously,it is hotter closer to the Sun and colder as we travel__________(56)from the Sun,Scientigtg egtimate tern- peratures at Pluto are about －210℃．How cold is the lowest estimated temperature in the entire universe?Again,it depends upon your_________(57).We are taught it is supposedly__________(58)to have atemperature below absolute zero,which is－273℃，at which atoms do not move.Two scientists,Cornell and Wieman,have successfully______(59)down a gas to a temperature barely above absolute zero. They won a Nobel Prize in Physics in 2001 for their work一not a discovery in this case.Why is the two scientists'work so important to science?In the 1920s，Satyendra Nath Bose was studying an interesting_______(60)about special light par-tidles（微粒）we now call photons（光子）.Bose had trouble __________(61)other scientists to believe his theory,so he contacted Albert Einstein. Einstein’s calculations helped him theorize that atoms_______(62) behave as Bose thought一but only at very cold temperatures.Scientists have also discovered that ultra-cold（超冷）atoms can help them make the world'S atomic clocks even__________(63)accurate.These clocks are so accurate today they would oniy lose one second _________ (64)six million years!Such accuracy will help us travel in space because digtanee is velocity（速度）times time( d=vt).With the long distances involved in space _______(65),we need to know time as accurately as possibie to get accurate distance._________(53)A:whetherB:whereC:whatD:when” 相关考题
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共用题干
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共用题干
The Cold PlacesThe Arctic is a polar region.It surrounds the North Pole.Like Antarctica,the Arctic is a land of ice and snow.Antarctica holds the record for a low temperature reading-125 degrees Fahrenheit below zero. Reading of 85 degrees below zero is common in both the Arctic and Antarctica.Winter temperatures average 30 degrees below zero in the Arctic .At the South Pole the winter average is about 73 degrees below zero.One thing alone makes it almost impossible for men to live in Antarctica and in parts of the Arctic .This one thing is the low temperature-the killing chill of far North and the polar South.To survive,men must wear the warmest possible clothing. They must build windproof shelters .They must keep heaters going at all times.Not ever for a moment can they be unprotected against the below-zero temperatures.Men have a way of providing for themselves.Polar explorers wrap themselves in warm coats and furs .The cold makes life difficult. But the explorers can stay alive.What about animals?Can they survive?Do we find plants?Do we find life in the Arctic and in Antarctica?Yes,we do. There is life in the oceans.There is life on land.Antarctica,as we have seen,is a cold place indeed.But this has not always been the case.Expedition scientists have discovered that Antarctica has not always been a frozen continent. At one time the weather in Antarctica may have much like our own.Explorers have discovered coal in Antarctica. This leads them to believe that Antarctica at one time was a land of swamps and forests.Heat and moisture must have kept the trees in the forests alive.The lowest temperature that man has ever known was recorded in Antarctica.A:.RightB: WrongC: Not mentioned
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共用题干
What is the Coolest Gas in the Universe?What is the coldest air temperature ever recorded on Earth?Where was this low temperature recorded ?The coldest recorded temperature on Earth was －91℃, which_____ (51) in Antarctica（南极洲） in 1983.We encounter an interesting situation when we discuss temperatures in_________(52).Temperatures in Earth orbit（轨道）actually range from about +120℃ to －120℃. The temperature depends upon ______(53)you are in direct sunlight or in shade.Obviously，－120℃ is colder than our body can ________ (54)endure.The space temperatures just discussed affect only our area of the solar________(55).Obviously,it is hotter closer to the Sun and colder as we travel__________(56)from the Sun,Scientigtg egtimate tern- peratures at Pluto are about －210℃．How cold is the lowest estimated temperature in the entire universe?Again,it depends upon your_________(57).We are taught it is supposedly__________(58)to have atemperature below absolute zero,which is－273℃，at which atoms do not move.Two scientists,Cornell and Wieman,have successfully______(59)down a gas to a temperature barely above absolute zero. They won a Nobel Prize in Physics in 2001 for their work一not a discovery in this case.Why is the two scientists'work so important to science?In the 1920s，Satyendra Nath Bose was studying an interesting_______(60)about special light par-tidles（微粒）we now call photons（光子）.Bose had trouble __________(61)other scientists to believe his theory,so he contacted Albert Einstein. Einstein’s calculations helped him theorize that atoms_______(62) behave as Bose thought一but only at very cold temperatures.Scientists have also discovered that ultra-cold（超冷）atoms can help them make the world'S atomic clocks even__________(63)accurate.These clocks are so accurate today they would oniy lose one second _________ (64)six million years!Such accuracy will help us travel in space because digtanee is velocity（速度）times time( d=vt).With the long distances involved in space _______(65),we need to know time as accurately as possibie to get accurate distance._________(63)A:thatB:suchC:muchD:more
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共用题干
What is the Coolest Gas in the Universe?What is the coldest air temperature ever recorded on Earth?Where was this low temperature recorded ?The coldest recorded temperature on Earth was －91℃, which_____ (51) in Antarctica（南极洲） in 1983.We encounter an interesting situation when we discuss temperatures in_________(52).Temperatures in Earth orbit（轨道）actually range from about +120℃ to －120℃. The temperature depends upon ______(53)you are in direct sunlight or in shade.Obviously，－120℃ is colder than our body can ________ (54)endure.The space temperatures just discussed affect only our area of the solar________(55).Obviously,it is hotter closer to the Sun and colder as we travel__________(56)from the Sun,Scientigtg egtimate tern- peratures at Pluto are about －210℃．How cold is the lowest estimated temperature in the entire universe?Again,it depends upon your_________(57).We are taught it is supposedly__________(58)to have atemperature below absolute zero,which is－273℃，at which atoms do not move.Two scientists,Cornell and Wieman,have successfully______(59)down a gas to a temperature barely above absolute zero. They won a Nobel Prize in Physics in 2001 for their work一not a discovery in this case.Why is the two scientists'work so important to science?In the 1920s，Satyendra Nath Bose was studying an interesting_______(60)about special light par-tidles（微粒）we now call photons（光子）.Bose had trouble __________(61)other scientists to believe his theory,so he contacted Albert Einstein. Einstein’s calculations helped him theorize that atoms_______(62) behave as Bose thought一but only at very cold temperatures.Scientists have also discovered that ultra-cold（超冷）atoms can help them make the world'S atomic clocks even__________(63)accurate.These clocks are so accurate today they would oniy lose one second _________ (64)six million years!Such accuracy will help us travel in space because digtanee is velocity（速度）times time( d=vt).With the long distances involved in space _______(65),we need to know time as accurately as possibie to get accurate distance._________(51)A:operatedB:occurredC:openedD:offered
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单选题Bad valves operation of the reciprocating air compressors can be detected by observation of （）.A
the discharge temperature lowB
the discharge temperature highC
the discharge pressure riseD
the inter-stage pressure low
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单选题Whether using a centrifuge or a simple filter, oil cleaning and filtration will be the most effective when the oil is at a （）.A
high temperature and a high viscosityB
high temperature and a low viscosityC
low temperature and a high viscosityD
low temperature and a low viscosity
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单选题Under normal conditions, the quantity of air circulation becomes less and less.What is the reason?（）A
dirty delivery ductsB
too much refrigerantC
the fouling filtersD
high temperature outside
考题
单选题Low cylinder compression pressure and a high exhaust temperature may indicate （）A
early fuel injection timingB
leaking valvesC
a continuously open scavenge air portD
low cooling water temperature
考题
单选题In terms of pressure and temperature in the refrigerant in the compressor, what happens to the primary?（）A
its pressure and temperature are both loweredB
its pressure and temperature are both raisedC
its pressure is lowered and its temperature is raisedD
its pressure is raised and its temperature is lowered
考题
单选题The greater the pressure difference between a high and a low pressure center，the（）.A
dryer the air mass will beB
cooler the temperature will beC
greater the force of the wind will beD
warmer the temperature will be
考题
单选题On what do you depend having the air cooler of main engine chemically washed?（）A
increased air pressure differenced before and aft air coolerB
reduced exhaust temperature in all cylindersC
reduced temperature difference between water inlet and outletD
both A and C
考题
单选题Ambient temperature is the （）.A
amount of temperature rise with no loadB
temperature of the compartment where the motor is locatedC
normal operating temperature, less the room temperatureD
amount of temperature developed by an operating motor
考题
单选题For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）A
the temperature and flow quantity of the exhaust gas from M/EB
the quantity of steam demandedC
the rotary speed and the cooling water temperature of main engineD
efficiency of M/ turbocharger
考题
单选题For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）A
the temperature and flow quantity of the exhaust gas from M.EB
the quantity of steam demandedC
the rotary speed and the cooling water temperature of main engineD
efficiency of M.E turbocharger
考题
单选题Exhaust temperature increases in all cylinders, the possible cause may be（） (1) increased scavenging air temperature (2) air in fuel pumps and fuel valves (3) fouling of air and gas passagesA
(1)+(2)B
(1)+(3)C
(2)+(3)D
(1)+(2)+(3)
考题
单选题Which of the following is a TRUE statement?A
Sound travels fastest through the hardest thing.B
Sound travels at different speeds in different temperatures and in different media.C
Sound travels fastest in hottest temperature.D
Sound travels fastest in coldest temperature.
考题
单选题High firing pressures and a low exhaust temperature in a diesel engine may result from （）.A
decreased piston to cylinder head clearanceB
increased exhaust system back pressureC
early fuel injection timingD
low scavenge air temperature
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