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________ at 53N3 127E4 moving ely 12 kts with cold front from center passing 51N3 126E1 to 51N2 125E4 and warm front from 46N1 128E2 passing 40N2 125E2．
A.Low 1002 HPA
B.Low 1045 HPA
C.High 1002 HPA
D.High 1045 HPA
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更多 “ ________ at 53N3 127E4 moving ely 12 kts with cold front from center passing 51N3 126E1 to 51N2 125E4 and warm front from 46N1 128E2 passing 40N2 125E2．A.Low 1002 HPAB.Low 1045 HPAC.High 1002 HPAD.High 1045 HPA ” 相关考题
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An administrator is creating a redundant environment for a current data center. A backup site must be available if the entire data center site should become unavailable. To reduce costs, this backup site does not need to be up and running at all times ready for failover. It must contain equipment and the ability to restore data from the data center.Which of the following site types should be considered to meet these requirements?（）A. Hot siteB. Warm siteC. Cold siteD. Active failover site
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After the passage of a cold front the visibility ______.A.does not changeB.improves rapidlyC.improves only slightlyD.becomes poor
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A generally circular low pressure area is called a(n)______．A.cycloneB.anticycloneC.cold frontD.occluded front
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An occluded front is caused by a(n) ______.A.low pressure areaB.high pressure areaC.area of calm airD.cold front overtaking a warm front
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Cyclones tend to move ______.A.perpendicular to the isobars in their warm sectorsB.parallel to the isobars in their warm sectorsC.parallel to the line of the cold frontD.perpendicular to the line of the cold front
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An administrator is creating a redundant environment for a current data center. A backup site must be available if the entire data center site should become unavailable. To reduce costs， this backup site does not need to be up and running at all times ready for failover. It must contain equipment and the ability to restore data from the data center. Which of the following site types should be considered to meet these requirements？ （）A、 Hot siteB、 Warm siteC、 Cold siteD、 Active failover site
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单选题The writer seems to imply that Europeans travel mostly for the reason that______.A
they want to see historic remains or religious spotsB
they are interested in different cultural traditions and social customsC
they would like to take pictures in front of famous sitesD
they wish to escape from the cold, dark and rainy days back at home
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单选题Jim was absent from school for the whole week ______ a bad cold.A
because ofB
in addition toC
according toD
in front of
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单选题On a working copy of a weather map，a cold front is represented by what color line? （）A
RedB
BlueC
Alternating red and blueD
Purple
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单选题Cyclones tend to move（）.A
perpendicular to the isobars in their warm sectorsB
parallel to the isobars in their warm sectorsC
parallel to the line of the cold frontD
perpendicular to the line of the cold front
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单选题Advection fog may be formed by cold air passing over a（）.A
colder sea surfaceB
warmer sea surfaceC
dry coastal plainsD
high mountain or plateau
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单选题A cold front moving in from the northwest can produce（）.A
thunderstorms，hail，and then rapid clearingB
increasing cloud cover lasting for several daysC
lengthy wet weatherD
low ceilings with thick cirrus clouds
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单选题The height of a tide can be increased by（）.A
A storm surgeB
A high pressure areaC
The jet streamD
A cold front
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单选题The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.A
remain constant along the tubes lengthB
be greatest in a single pass counter flow heat exchangerC
remain constant throughout the heat exchangerD
vary from section to section through out the heat exchanger
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单选题In the Northern Hemisphere，winds veering sharply to the west or northwest with increasing speed are indications that a（）.A
cold front has passedB
low pressure center is approachingC
stationary front existsD
high pressure center has passed
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单选题A disadvantage of a four-stroke/cycle diesel engine is （）A
higher working temperature of piston and cylinderB
the use of scavenge portsC
fewer power strokes per revolution of the crankshaftD
part of the fuel is burned as the piston is moving away from top dead center
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单选题请阅读 Passage 2，完成第 26~30小题。Passage 2 The common cold is the world's most widespread illness， which is plague that flesh receives.The most widespread fallacy of all is that colds caused by cold.They are not， They are caused by viruses passing on from person to person.You catch a cold by coming into contact， directly or indirectly， with someone who already has one.If cold causes colds， it would be reasonable to expect the Eskimos to suffer from them forever.But they do not.And in isolated arctic regions explorers have reported being free from colds until coming into contact again with infected people from the outside world by way of packages and mail dropped from airplanes.During the First World War soldiers who spent long periods in the trenches， cold and wet，showed no increased tendency to catch colds.In the Second World War prisoners at the notorious Auschwitz concentration camp， naked and starving， were astonished to find that they seldom had colds.At the Common Cold Research Unit in England， volunteers took part in Experiments in which they gave themselves to the discomforts of being cold and wet for long stretches of time.After taking hot baths， they put on bathing suits， allowed themselves to be with cold water， and then stood about dripping wet in drafty room.Some wore wet socks all day while others exercised in the rain until close to exhaustion.Not one of the volunteers came down with a cold unless a cold virus was actually dropped in his nose.If， then， cold and wet have nothing to do with catching colds， why are they more frequent in the winter? Despite the most pains-taking research， no one has yet found the answer， One explanation offered by scientists is that people tend to stay together indoors more in cold weather than at other times， and this makes it easier for cold viruses to be passed on.No one has yet found a cure for the cold.There are drugs and pain suppressors such as aspirin， but all they do is relieve the symptoms.Which of the following does not agree with the passage?A
The Eskimos do not suffer from colds all the time.B
Colds are not caused by cold.C
People suffer from colds just because they like to stay indoors.D
A person rnay catch a cold by touching someone who already has one.
考题
单选题请阅读 Passage 2，完成第 26~30小题。Passage 2 The common cold is the world's most widespread illness， which is plague that flesh receives.The most widespread fallacy of all is that colds caused by cold.They are not， They are caused by viruses passing on from person to person.You catch a cold by coming into contact， directly or indirectly， with someone who already has one.If cold causes colds， it would be reasonable to expect the Eskimos to suffer from them forever.But they do not.And in isolated arctic regions explorers have reported being free from colds until coming into contact again with infected people from the outside world by way of packages and mail dropped from airplanes.During the First World War soldiers who spent long periods in the trenches， cold and wet，showed no increased tendency to catch colds.In the Second World War prisoners at the notorious Auschwitz concentration camp， naked and starving， were astonished to find that they seldom had colds.At the Common Cold Research Unit in England， volunteers took part in Experiments in which they gave themselves to the discomforts of being cold and wet for long stretches of time.After taking hot baths， they put on bathing suits， allowed themselves to be with cold water， and then stood about dripping wet in drafty room.Some wore wet socks all day while others exercised in the rain until close to exhaustion.Not one of the volunteers came down with a cold unless a cold virus was actually dropped in his nose.If， then， cold and wet have nothing to do with catching colds， why are they more frequent in the winter? Despite the most pains-taking research， no one has yet found the answer， One explanation offered by scientists is that people tend to stay together indoors more in cold weather than at other times， and this makes it easier for cold viruses to be passed on.No one has yet found a cure for the cold.There are drugs and pain suppressors such as aspirin， but all they do is relieve the symptoms.The author cites the Eskimos not suffering from common colds forever to indicate ____.A
common colds are more severe than other plaguesB
viruses are the factors causing common coldsC
common colds are full of mythD
the idea that cold leads to colds doesn’t stand up
考题
单选题请阅读 Passage 2，完成第 26~30小题。Passage 2 The common cold is the world's most widespread illness， which is plague that flesh receives.The most widespread fallacy of all is that colds caused by cold.They are not， They are caused by viruses passing on from person to person.You catch a cold by coming into contact， directly or indirectly， with someone who already has one.If cold causes colds， it would be reasonable to expect the Eskimos to suffer from them forever.But they do not.And in isolated arctic regions explorers have reported being free from colds until coming into contact again with infected people from the outside world by way of packages and mail dropped from airplanes.During the First World War soldiers who spent long periods in the trenches， cold and wet，showed no increased tendency to catch colds.In the Second World War prisoners at the notorious Auschwitz concentration camp， naked and starving， were astonished to find that they seldom had colds.At the Common Cold Research Unit in England， volunteers took part in Experiments in which they gave themselves to the discomforts of being cold and wet for long stretches of time.After taking hot baths， they put on bathing suits， allowed themselves to be with cold water， and then stood about dripping wet in drafty room.Some wore wet socks all day while others exercised in the rain until close to exhaustion.Not one of the volunteers came down with a cold unless a cold virus was actually dropped in his nose.If， then， cold and wet have nothing to do with catching colds， why are they more frequent in the winter? Despite the most pains-taking research， no one has yet found the answer， One explanation offered by scientists is that people tend to stay together indoors more in cold weather than at other times， and this makes it easier for cold viruses to be passed on.No one has yet found a cure for the cold.There are drugs and pain suppressors such as aspirin， but all they do is relieve the symptoms.The passage mainly discusses ____.A
the experiments on the common coldB
the cures about the common coldC
why and how people catch coldsD
the continued spread of common colds
考题
单选题请阅读 Passage 2，完成第 26~30小题。Passage 2 The common cold is the world's most widespread illness， which is plague that flesh receives.The most widespread fallacy of all is that colds caused by cold.They are not， They are caused by viruses passing on from person to person.You catch a cold by coming into contact， directly or indirectly， with someone who already has one.If cold causes colds， it would be reasonable to expect the Eskimos to suffer from them forever.But they do not.And in isolated arctic regions explorers have reported being free from colds until coming into contact again with infected people from the outside world by way of packages and mail dropped from airplanes.During the First World War soldiers who spent long periods in the trenches， cold and wet，showed no increased tendency to catch colds.In the Second World War prisoners at the notorious Auschwitz concentration camp， naked and starving， were astonished to find that they seldom had colds.At the Common Cold Research Unit in England， volunteers took part in Experiments in which they gave themselves to the discomforts of being cold and wet for long stretches of time.After taking hot baths， they put on bathing suits， allowed themselves to be with cold water， and then stood about dripping wet in drafty room.Some wore wet socks all day while others exercised in the rain until close to exhaustion.Not one of the volunteers came down with a cold unless a cold virus was actually dropped in his nose.If， then， cold and wet have nothing to do with catching colds， why are they more frequent in the winter? Despite the most pains-taking research， no one has yet found the answer， One explanation offered by scientists is that people tend to stay together indoors more in cold weather than at other times， and this makes it easier for cold viruses to be passed on.No one has yet found a cure for the cold.There are drugs and pain suppressors such as aspirin， but all they do is relieve the symptoms.Volunteers taking part in the experiments in the Common Cold Research Unit ____.A
all suffered from cold and wetB
never caught coldsC
caught colds easilyD
all caught colds because of the harsh environment
考题
单选题When fighting a fire on a bulkhead using a portable carbon dioxide extinguisher，the stream should be directed at the（）.A
base of the flames，moving the horn from side to side，following the flames upward as they diminishB
top of the flaming area，moving the horn from side to side，following the flames downward as they diminishC
center of the flaming area，moving the horn vertically from top to bottomD
bottom of the flaming area，moving the horn vertically to the top following the flames upward as they diminish
考题
单选题A（）is the intersection of the surface of a sphere and a plane passing through the center of the sphere.A
great circleB
small circleC
large circleD
general circle
考题
单选题Which of the following statements concerning frontal movements is TRUE（）.A
The temperature rises after a cold front passesB
The barometric pressure rises when a warm front passesC
A cold front generally passes faster than a warm frontD
A warm front usually has more violent weather associated with it than a cold front
考题
单选题The writer seems to imply that Europeans travel mostly for the reason that _____.A
they want to see historic remains or religious spotsB
they are interested in different cultural traditions and social customsC
they would like to take pictures in front of famous sitesD
they wish to escape from the cold, dark and rainy days back at home
考题
单选题After the passage of a cold front the visibility（）.A
does not changeB
improves rapidlyC
improves only slightlyD
becomes poor
考题
单选题The fog produced by warm moist air passing over a cold surface is called（）.A
conduction fogB
radiation fogC
frontal fogD
advection fog
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