单选题A deep draft VLCC (100，000 DWT+) navigating in a narrow channel or canal（）.Adraws more water than when underway in deep waterBdraws less water with an increase in speedCrequires less power for a given speedDsteers better under full power
单选题
A deep draft VLCC (100，000 DWT+) navigating in a narrow channel or canal（）.
A
draws more water than when underway in deep water
B
draws less water with an increase in speed
C
requires less power for a given speed
D
steers better under full power
参考解析
解析：
暂无解析
相关考题：
As there is less and less coal and oil, scientists are exploring new ways of making use of ____ energy, such as sunlight, wind and water for power and fuel.A. primary B. alternative C. instant D. unique
24． When you do scuba diving， you can ________．A． stay in deep water for a long timeB． dive very， very deepC．live in deep water easilyD． dive freely without any dangers
A） 信息归纳（共5小题，每小题1分）阅读下面短文，完成信息卡：Skin-diving is a new sport today. This sport takes you into a wonderful new world. It is like a visit to the moon. When you are under water, it is easy for you to climb big rocks, because you are no longer heavy.Here, under water, everything is blue and green. During the day, there is plenty of light. When fish swim nearby, you can catch them with your hands.When you have tanks of air on your back, you can stay in deep water for a long time. But you must be careful when you dive in deep water.To catch fish is one of the most interesting parts of this sport. Besides, there are more uses for skin-diving. You can clean ships without taking them out of water. You can get many things from the deep sea.Now you see that skin-diving is both useful and interesting.In formation CardA new sport today81.___________
But the hardware is designed to use even（）power than other schemes， making it especially appropriate for such things as RFID tags， which must work for years（）any external power source.A．most B．more C．less D．otherA．with B．without C．as D．than
We drop a piece of metal into a jar full of water, the metal will float if it weighs less than______.A. an equal amount of silverB. an equal amount of goldC. all the water in the jar nowD. the water that leaves the jar
From this selection we may conclude that the king's crown______.A. moved less water than pure gold of the same sizeB. moved more water than pure gold of the same weightC. moved more water than pure gold of the same sizeD. moved less water than pure gold of the same weight
there is no reason that they should limit how much vitamin you take ____ they can limit how much water you drink. A. any more thanB. no more thanC. much more thanD. no less than
The problem of underground water is more serious because（ ）[A] the underground water trickles away all the year round[B] the underground water is hidden deep beneath the Earth[C] the change of it must be controlled by the NASA's satellites[D] the dramatic change of it might affect the gravitational field
When planning the loading or discharging of a VLCC（100，000 DWT+）what is the most important consideration ________．A.Draft and trimB.Limits of the bending momentsC.Rate of dischargingD.Rate of loading
A VLCC（100，000 DWT+）with a 30，000 Shaft Horsepower Steam Turbine is slow to respond to engine movements and has less stopping power than normal ships because it has a ______．A.Bigger propellerB.Smaller power weight ratioC.Smaller propellerD.Larger power weight ratio
As there is less and less coal and oil, scientists are exploring new ways of making use of _______ energy, such as sunlight, wind and water for power and fuel.A.primaryB.alternativeC.instantD.unique
The canal must be wide enough to permit two of the largest boats using it to pass each other easily.It must be deep enough to leave about two feet of water（ ）the keel of the largest boat using the canal.A.downB.belowC.beneathD.off
共用题干第一篇Water Resources on the EarthThe second most important constituent（构成成分）of the biosphere（生物圈）is liquid water. This can only exist in a very narrow range of temperatures,since water freezes at 0℃and boils a 100℃．Life as we know it would only be possible on the surface of a planet which had temperature: somewhere within this narrow range.The earth's supply of water probably remains fairly constant in quantity.The total quantity of water is not known very accurately,but it is about enough to cover the surface of the globe to a depth of about two and three-quarter kilometers.Most of it is in the form of the salt water of the oceans一about 97 percent. The rest is fresh.But three-quarters of this is in the form of ice at the poles and or mountains and cannot be used by living systems until melted.Of the remaining fraction,which h somewhat less than one percent of the whole.There is 10—20 times as much stored underground water as there is actually on the surface.There is also a tiny,but extremely important fraction of the water supply which is present as water vapour in the atmosphere.Water vapour in the atmosphere is the channel through which the whole water circulation（循环） of the biosphere has to pass.Water evaporated（蒸发）from the surface of the oceans,from lakes and rivers and from moist（潮湿的）earth is added to it. From it the water comes out again as rain or snow,falling on either the sea or the land. There is,as might be expected, a more intensive evaporation per unit area over the sea and oceans than over the land,but there is more rainfall over the land than over the oceans and the balance is restored by the run off from the land in the form of rivers.There is more of rainfall________.A:over the mountains than over the riversB:over the rivers than over the mountainsC:over the land than over the oceansD:over the oceans than over the land
There is no reason they should limit how much vitamin you take，( )they can limit how much water you drink. A.much more than B.no more than C.no less than D.any more than
The following are the reasons why British coal mining is today called a"sick"industry except（）ABritain has used up almost all coal depositsBthe demand for British coal has declinedCpetroleum,water power,and electric power are replacing coal for many purposesDthe old British mines are narrow and deep,making it difficult to sue machines fro mining.
单选题A vessel travelling down a narrow channel，especially if the draft is nearly equal to the depth of the water，may set off the nearer side. This effect is known as（）.Asmelling the bottomBsquattingCbank suctionDbank cushion
单选题A power-driven vessel underway shall keep out of the way of（）.Aa vessel restricted in her ability to maneuverBa vessel under commandCa passenger shipDa seaplane on the water
单选题The height of a VHF radio antenna is more important than the power output wattage of the radio because（）.AVHF communications are basically line of sightBthe air is more dense the higher you goCsalt water is a poor conductor of soundDsea water absorbs the radiated energy
单选题The total power consumed in a parallel circuit is （）Athe sum of the powers used in each load (resistor)Bdivided by the number of loadsCalways less than the power used in the smallest loadDthe sum of the powers used in each individual load never more than the power used in the largest load
单选题Which of the following statements concerning the water tube and fire tube boilers is not true?（）Anatural circulation of the water in the water tube boiler is better than that in the fire tube boilerBfor the same output the water tube boiler will carry less mass of water compared with the fire tube boilerCthe water tube boiler will cost shorter time for steam raisingDthe water tube boiler require lower skill in operating and maintaining
单选题When anchoring，good practice requires 5 to 7 fathoms of chain for each fathom of depth. In deep water you should use（）.Athe same ratioBmore chain for each fathom of depthCless chain for each fathom of depthDtwo anchors with the same ratio of chain
单选题A common occurrence when a vessel is running into shallow water is that（）.Athe wake is less pronouncedBthe vessel is more responsive to the rudderCsquat will cause a decrease in bottom clearance and an increase in draftDAll of the above
单选题A VLCC (100，000 DWT+) with a 30，000 Shaft Horsepower Steam Turbine is slow to respond to engine movements and has less stopping power than normal ships because it has a（）.Abigger propellerBsmaller power to weight ratioCsmaller propellerDlarger power to weight ratio
单选题In a diesel engine jacket water cooler, with seawater cooling the fresh water, the（）Asea water temperature must never be warmer than 40℃Bjacket water pressure should always be greater than the sea water pressureCjacket water temperature must always be less than 60℃Djacket water pressure must always be less than the sea water pressure
单选题Which of the following statements is true concerning an oil cooler?（）AThe oil temperature is less than the cooling water temperatureBThe oil pressure is less than the cooling water pressureCThe oil pressure is greater than the cooling water pressureDThe oil flow control valve is always installed in the oil input line
单选题When the vessel on the full speed ahead, if full astern immediately （） the main engine start astern and fuel injection.Aafter the thrust power is zeroBafter the torsion is zeroCsurpass the critical point on the water turbo phaseDafter the speed is zero
单选题A deep draft VLCC (100，000 DWT+) navigating in a narrow channel or canal（）.Adraws more water than when underway in deep waterBdraws less water with an increase in speedCrequires less power for a given speedDsteers better under full power
单选题The following are the reasons why British coal mining is today called a"sick"industry except（）ABritain has used up almost all coal depositsBthe demand for British coal has declinedCpetroleum,water power,and electric power are replacing coal for many purposesDthe old British mines are narrow and deep,making it difficult to sue machines fro mining.