网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
The free surface effects of a partially full liquid tank decrease with increased ______．
A.Density of the liquid
B.Placement of the tank above the keel
C.Displacement volume of the ship
D.Size of the surface area in the tank
参考答案
更多 “ The free surface effects of a partially full liquid tank decrease with increased ______．A.Density of the liquidB.Placement of the tank above the keelC.Displacement volume of the shipD.Size of the surface area in the tank ” 相关考题
考题
Serious loss of reserve buoyancy resulting from flooding any compartment of a ship will always ______.A.increase the trimB.change the free surface effectC.cause a serious listD.decrease ship stability
考题
Coalescence(聚合) is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and ______in size.A.expandB.extractC.increaseD.decrease
考题
An upright vessel has negative GM．GM becomes positive at the angle of loll because the ______．A.Free surface effects are reduced due to pocketingB.KG is reduced as the vessel seeks the angle of lollC.Effective beam is increased causing BM to increaseD.Underwater volume of the hull is increased
考题
A tank containers should not generally be more than 95% full，______．A.to allow for possible thermal expansion of the contentsB.to prevent dangerous surging movements in transitC.to increase its weightD.to change the free surface in it
考题
The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel's displacement into the ______．A.Transverse free surface correction for the vesselB.Sum of the vertical moments of the vesselC.Sum of the longitudinal free surface moments of the vesselD.Longitudinal centerline of the vessel
考题
Which statement about the free surface effect is TRUE ________．A.It increases in direct proportion to the length of the tank times the breadth squaredB.It decreases at increased angles of heel due to pocketing when a tank is 90% fullC.It decreases in direct proportion to increasing specific gravity of the liquid in the tankD.In practice，the correction is considered to be a virtual reduction of KG
考题
The free surface corrections depend upon the dimensions of the surface of the free liquids and the ______．A.volume of liquid in the tankB.displacement of the vesselC.location of the tank in the vesselD.height of the center of gravity of the vessel
考题
As the displacement of a vessel increases,. the detrimental effect of free surface ______.A.increasesB.decreasesC.remains the sameD.may increase or decrease depending on the fineness of the vessel’s form
考题
单选题Which of the following is more important in determining the amount of free surface that will be produced?（）.A
The breath of the tankB
The length of the tankC
The amount of liquid in the tankD
The position of the tank in relation to the center line of the vessel
考题
单选题During a stability test on a small passenger vessel（）.A
the vessel must be moored snuglyB
each tank must be partially full to show it does not leakC
all dunnage，tools，and extraneous items are securedD
water under vessel must be deep enough to prevent grounding
考题
单选题To calculate the free surface correction，it is necessary to divide the free-surface moments by the（）.A
total weight of liquid loadsB
total displacementC
lightweightD
deadweight
考题
单选题The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel’s displacement into the（）.A
transverse free surface correction for the vesselB
sum of the vertical moments of the vesselC
sum of the longitudinal free surface moments of the vesselD
longitudinal centerline of the vessel
考题
单选题The effects of free surface on a vessel’s initial stability do NOT depend upon the（）.A
volume of displacement of the vesselB
dimensions of the surface of the liquidC
amount of liquid in slack tanksD
specific gravity of the liquid in the tank
考题
单选题A partially full tank causes a virtual rise in the height of the（）.A
metacenterB
center of buoyancyC
center of flotationD
center of gravity
考题
单选题As the displacement of a vessel increases, the detrimental effect of free surface（）.A
increasesB
decreasesC
remains the sameD
may increase or decrease depending on the fineness of the vessel's form
考题
问答题The difference between a liquid and a gas is obvious (1)____ the conditions of temperature and pressure commonly found at the surface of the Earth. A liquid can be kept in an open container and fills it to the level of a free surface. A gas forms no free surface but tends to diffuse throughout the space available; it must (2)____ be kept in a closed container, as in the (3)____ of a planet’s atmosphere. The distinction was a prominent feature of early theories (4)____(describe) the phases of matter. In the nineteenth century, for example, one theory maintained that a liquid could be “dissolved” in a vapor without losing its identity, and another theory held that the two phases are made up of different kinds of molecules (分子). The theories now prevailing (5) t____ a quite different approach by emphasizing what liquids and gases have in common. They are both forms of matter (6)____ have no permanent structure, and they both flow easily. They are fluids.The (7)____(fundament) similarity of liquids and gases becomes clearly apparent when the temperature and pressure are raised somewhat. Suppose a closed container partially filled with a liquid is heated. The liquid expands, or in other (8)____, becomes less dense; some of it evaporates. In contrast, the vapor above the liquid surface becomes dense as the evaporated molecules are added to it. The combination of temperature and pressure (9)____ which the densities become equal is called the critical point. Above the critical point the liquid and the gas can no longer be (10)____(distinguish); there is a single, undifferentiated fluid phase of uniform density.
考题
单选题As engine RPM is increased from idle speed to full load speed, which of the conditions listed will decrease?（）A
Compression ratioB
Fuel/Air ratioC
Compression pressureD
Lube oil pressure
考题
单选题You may improve a vessels stability by （）.A
keeping the fuel tanks topped offB
increasing the free surface effectC
keeping the fuel tanks at least half MID
keeping at least one fuel tank empty for slops
考题
单选题When liquid is free to move transversely in a tank, the effect is called（）.A
Free communicationB
Free fensityC
Free surfaceD
Negative GM
考题
单选题An upright vessel has negative GM. GM becomes positive at the angle of loll because the（）.A
free surface effects are reduced due to pocketingB
KG is reduced as the vessel seeks the angle of lollC
effective beam is increased causing BM to increaseD
underwater volume of the hull is increased
考题
单选题The center of the underwater volume of a floating vessel is the（）.A
center of buoyancyB
center of flotationC
uncorrected height of the center of gravity of the vesselD
center of gravity of the vessel corrected for free surface effects
考题
单选题Many vessels are provided with flume tanks，which also have a dump tank located under the flume tanks. In the event the ship is damaged，you could dump the flume tanks into the dump tank which would（）.A
reduce the free surface effect and raise the KGB
not have any effect on free surface and raise the KGC
reduce the free surface effect and lower the KGD
not have any effect on free surface and lower the KG
考题
单选题A wooden plug fitted tightly in the vent of a damaged tank may prevent the tank from（）.A
filling completelyB
developing free surfaceC
developing free surface momentD
collapsing
考题
单选题What is the principal danger from the liquid in a half full tank onboard a vessel?（）A
Corrosion from the shifting liquidB
Rupturing of bulkheads from the shifting liquidC
Loss of stability from free surface effectD
Holing of the tank bottom from the weight of the shifting liquid
考题
单选题The effect of free surface on initial stability depends upon（）.A
the amount of liquid in the compartmentB
the dimensions of the liquid surface and the vessel's displacementC
only the length of the compartmentD
the vertical position of the liquid in the vessel
考题
单选题The effects of free surface on initial stability depend upon the dimensions of the surface of the free liquids and the（）.A
volume of liquid in the tankB
volume of displacement of the vesselC
location of the tank in the vesselD
height of the center of gravity of the vessel
考题
单选题A vessel is equipped with cross-connected deep tanks.In which situation should the crossconnection valve be closed?（）.A
The tank lie above the waterline and are filledB
The tank are partically filled with dry cargoC
The tanks are partially filled with liquid cargoD
The tanks are filled and lie below the waterline
热门标签
最新试卷