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单选题
In this way, we can remove all salt, dirt and oil stains.（）
A
用这种办法我们可以清除所有盐渍、油垢和污渍。
B
用这种办法我们可以清除所有盐渍、污渍和油垢。
C
在路上我们除掉了所有重锈。
D
用这种办法我们可以清除所有的污渍、盐渍和油垢。
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更多 “单选题In this way, we can remove all salt, dirt and oil stains.（）A 用这种办法我们可以清除所有盐渍、油垢和污渍。B 用这种办法我们可以清除所有盐渍、污渍和油垢。C 在路上我们除掉了所有重锈。D 用这种办法我们可以清除所有的污渍、盐渍和油垢。” 相关考题
考题
Only in this way __________ English well.
A.we can learnB.we will learnC.can we learnD.can learn we
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We can draw a conclusion from the text that______.A) oil-price shocks are less shocking nowB) inflation seems irrelevant to oil -price shocksC) energy conservation can keep down the oil pricesD) the price rise of crude leads to the shrinking of heavy industry
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共用题干
Where Has the Salt Come from?Every now and then,we meet a fact about our earth that makes us feel strange and no answer for the fact has yet been found.Such a fact is the existence of salt in the oceans. How did it get there?We simply do not know how the salt got into the ocean!We do know,of course,that salt is water-soluble,and so passes into the oceans with rainwater.The salt of the earth's surface is constantly being dissolved（溶解）and is passing into the ocean.But we do not know whether this can explain the huge quantity of salt in oceans.If all the oceans were dried up,enough salt would be left to build a wall 180 miles high and a mile thick. Such a wall would reach once around the world at the Equator（赤道）!The common salt that we all use is produced from seawater or the water of salt lakes, from salt springs（源泉）and from deposits of rock salt. The concentration（浓度）of salt in seawater ranges from about three percent to three-and-one-half percent. The Dead Sea, which covers an area of about 340 square miles,contains about 11,600,000,000 tons of salt!On the average, a gallon（加仑）of seawater contains about a quarter of a pound of salt.The beds of rock salt that are found in various parts of the world were all originally formed by the evaporation（蒸发）of seawater millions of years ago. It is believed that the thick rock-salt deposits were formed after about nine-tenth of theY volume of seawater had been evaporated.Most commercial salt is obtained from rock salt.The usual method is to drill wells（井） down to the salt beds. Pure water is pumped down（抽进去）through a pipe. The water dissolves the salt and it is forced through another pipe up to the surface.A:Right B:Wrong C:Not mentioned
考题
共用题干
Where Has the Salt Come from?Every now and then,we meet a fact about our earth that makes us feel strange and no answer for the fact has yet been found.Such a fact is the existence of salt in the oceans. How did it get there?We simply do not know how the salt got into the ocean!We do know,of course,that salt is water-soluble,and so passes into the oceans with rainwater.The salt of the earth's surface is constantly being dissolved（溶解）and is passing into the ocean.But we do not know whether this can explain the huge quantity of salt in oceans.If all the oceans were dried up,enough salt would be left to build a wall 180 miles high and a mile thick. Such a wall would reach once around the world at the Equator（赤道）!The common salt that we all use is produced from seawater or the water of salt lakes, from salt springs（源泉）and from deposits of rock salt. The concentration（浓度）of salt in seawater ranges from about three percent to three-and-one-half percent. The Dead Sea, which covers an area of about 340 square miles,contains about 11,600,000,000 tons of salt!On the average, a gallon（加仑）of seawater contains about a quarter of a pound of salt.The beds of rock salt that are found in various parts of the world were all originally formed by the evaporation（蒸发）of seawater millions of years ago. It is believed that the thick rock-salt deposits were formed after about nine-tenth of theY volume of seawater had been evaporated.Most commercial salt is obtained from rock salt.The usual method is to drill wells（井） down to the salt beds. Pure water is pumped down（抽进去）through a pipe. The water dissolves the salt and it is forced through another pipe up to the surface.Beds of rock salt are found in every part of the world.A:Right B:Wrong C:Not mentioned
考题
共用题干
Where Has the Salt Come from?Every now and then,we meet a fact about our earth that makes us feel strange and no answer for the fact has yet been found.Such a fact is the existence of salt in the oceans. How did it get there?We simply do not know how the salt got into the ocean!We do know,of course,that salt is water-soluble,and so passes into the oceans with rainwater.The salt of the earth's surface is constantly being dissolved（溶解）and is passing into the ocean.But we do not know whether this can explain the huge quantity of salt in oceans.If all the oceans were dried up,enough salt would be left to build a wall 180 miles high and a mile thick. Such a wall would reach once around the world at the Equator（赤道）!The common salt that we all use is produced from seawater or the water of salt lakes, from salt springs（源泉）and from deposits of rock salt. The concentration（浓度）of salt in seawater ranges from about three percent to three-and-one-half percent. The Dead Sea, which covers an area of about 340 square miles,contains about 11,600,000,000 tons of salt!On the average, a gallon（加仑）of seawater contains about a quarter of a pound of salt.The beds of rock salt that are found in various parts of the world were all originally formed by the evaporation（蒸发）of seawater millions of years ago. It is believed that the thick rock-salt deposits were formed after about nine-tenth of theY volume of seawater had been evaporated.Most commercial salt is obtained from rock salt.The usual method is to drill wells（井） down to the salt beds. Pure water is pumped down（抽进去）through a pipe. The water dissolves the salt and it is forced through another pipe up to the surface.The author is sure that the dissolved salt from the earth's surface is the only source of the huge quantity of salt found in oceans.A:Right B:Wrong C:Not mentioned
考题
共用题干
Where Has the Salt Come from?Every now and then,we meet a fact about our earth that makes us feel strange and no answer for the fact has yet been found.Such a fact is the existence of salt in the oceans. How did it get there?We simply do not know how the salt got into the ocean!We do know,of course,that salt is water-soluble,and so passes into the oceans with rainwater.The salt of the earth's surface is constantly being dissolved（溶解）and is passing into the ocean.But we do not know whether this can explain the huge quantity of salt in oceans.If all the oceans were dried up,enough salt would be left to build a wall 180 miles high and a mile thick. Such a wall would reach once around the world at the Equator（赤道）!The common salt that we all use is produced from seawater or the water of salt lakes, from salt springs（源泉）and from deposits of rock salt. The concentration（浓度）of salt in seawater ranges from about three percent to three-and-one-half percent. The Dead Sea, which covers an area of about 340 square miles,contains about 11,600,000,000 tons of salt!On the average, a gallon（加仑）of seawater contains about a quarter of a pound of salt.The beds of rock salt that are found in various parts of the world were all originally formed by the evaporation（蒸发）of seawater millions of years ago. It is believed that the thick rock-salt deposits were formed after about nine-tenth of theY volume of seawater had been evaporated.Most commercial salt is obtained from rock salt.The usual method is to drill wells（井） down to the salt beds. Pure water is pumped down（抽进去）through a pipe. The water dissolves the salt and it is forced through another pipe up to the surface.If all the oceans were dried up,the salt thus obtained would be extremely great in size.A:Right B:Wrong C:Not mentioned
考题
共用题干
Where Has the Salt Come from?Every now and then,we meet a fact about our earth that makes us feel strange and no answer for the fact has yet been found.Such a fact is the existence of salt in the oceans. How did it get there?We simply do not know how the salt got into the ocean!We do know,of course,that salt is water-soluble,and so passes into the oceans with rainwater.The salt of the earth's surface is constantly being dissolved（溶解）and is passing into the ocean.But we do not know whether this can explain the huge quantity of salt in oceans.If all the oceans were dried up,enough salt would be left to build a wall 180 miles high and a mile thick. Such a wall would reach once around the world at the Equator（赤道）!The common salt that we all use is produced from seawater or the water of salt lakes, from salt springs（源泉）and from deposits of rock salt. The concentration（浓度）of salt in seawater ranges from about three percent to three-and-one-half percent. The Dead Sea, which covers an area of about 340 square miles,contains about 11,600,000,000 tons of salt!On the average, a gallon（加仑）of seawater contains about a quarter of a pound of salt.The beds of rock salt that are found in various parts of the world were all originally formed by the evaporation（蒸发）of seawater millions of years ago. It is believed that the thick rock-salt deposits were formed after about nine-tenth of theY volume of seawater had been evaporated.Most commercial salt is obtained from rock salt.The usual method is to drill wells（井） down to the salt beds. Pure water is pumped down（抽进去）through a pipe. The water dissolves the salt and it is forced through another pipe up to the surface.We have not fully understood how salt got into the ocean.A:Right B:Wrong C:Not mentioned
考题
The writer thinks that_________.A.we can’t judge buildings by the ancient standards
B.we can’t judge all the buildings by the ancient standards
C.we can’t judge all the modern buildings by the ancient standards
D.we can’t judge modern buildings
考题
The water we drink and use is running short in the world.We all have to learn how to stop wasting our limited water.One of the steps we should take is to find ways of reusing it.Experiments have already been done in this field.
Today in most large cities,fresh water is used only once,then it runs into waste system.But it is possible to pipe the used water to a purifying factory.There it can be filtered and treated with chemicals so that it can be used again,just as it were fresh from a spring.
But even if every large city purified and reused its water,we still would not have enough.Then we could turn to the oceans.All we’d have to do to make use of the seawater on earth is to get rid of the salt.This process is called desalinization,and it is already in use in many parts of the world.
The way to stop wasting our limited water is to________.A.do experiments with water
B.purify the used water and reuse it
C.use fresh water once again
D.make use of seawater
考题
Could you buy some salt on your way home? （）AAll right.BIs that all?CJust a few.DLet me see.
考题
We can remove the heavy rust on the plate with a （）(敲锈锤).A、scraperB、hammerC、chipping hammerD、lining brush
考题
Could you buy some salt on your way home? （）A、All right.B、Is that all?C、Just a few.D、Let me see.
考题
We can't tell you the results until we have looked at（）A、all the datumB、the all dataC、all the dataD、the all datum
考题
In this way, we can remove all salt, dirt and oil stains.（）A、用这种办法我们可以清除所有盐渍、油垢和污渍。B、用这种办法我们可以清除所有盐渍、污渍和油垢。C、在路上我们除掉了所有重锈。D、用这种办法我们可以清除所有的污渍、盐渍和油垢。
考题
单选题Dirt in a fuel oil system of a diesel engine can cause （）A
damage to strainersB
over-speeding of the engineC
excessive cooling of the engineD
injector damage
考题
单选题The （） can tell us how much heat we can get from the burning of an oil.A
viscosityB
flash pointC
cetane numberD
calorific value
考题
单选题A lube oil filter can be used to remove most contaminants from lube oilA contaminant which will remain in the lube oil after filtering is （）.A
acidB
fuel oilC
sedimentD
water
考题
单选题Which of the following methods can not remove the non-separable emulsified oil in bilge water?（）A
gravity separationB
use of adsorbentsC
use of flocculentsD
use of chemical addition
考题
单选题We can remove the heavy rust on the plate with a （）.A
scraperB
hammerC
chipping hammerD
saw
考题
单选题Only in this way（）English well.A
can we learnB
we can learnC
we learn canD
that we can learn
考题
单选题Could you buy some salt on your way home? （）A
All right.B
Is that all?C
Just a few.D
Let me see.
考题
单选题Can we change the location for the tung-oil（）that for the gum rosin?A
byB
forC
intoD
with
考题
单选题A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 312°. What action should be taken to remove this error during compass adjustment? （）A
If the quadrantal spheres are all the way out，replace them with smaller spheresB
If the quadrantal spheres are all the way in，replace them with larger spheresC
If the quadrantal spheres are all of the way out，move the spheres inD
If the quadrantal spheres are all the way out，replace them with larger spheres.
考题
单选题We’ve tried many ways, but all in vainOnly in this way, （） the problem, I’m sure.A
can we solveB
we can solveC
we will solveD
can we solved
考题
单选题Dirt in the fuel oil system of a diesel engine can cause （）.A
clogged filtersB
poor combustionC
overloading of the dieselD
shock of fuel lines
考题
单选题We can't tell you the results until we have looked at（）A
all the datumB
the all dataC
all the dataD
the all datum
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