单选题A tank 36 ft. by 36 ft. by 6 ft. is filled with water to a depth of 5 ft. If a bulkhead is placed in the center of the tank running fore-and-aft along the 36-foot axis，how will the value of the moment of inertia of the free surface be affected?（）AThe moment of inertia would remain unchangedBThe moment of inertia would be 1/4 its original valueCThe moment of inertia would be 1/2 the original valueDNone of the above
单选题
A tank 36 ft. by 36 ft. by 6 ft. is filled with water to a depth of 5 ft. If a bulkhead is placed in the center of the tank running fore-and-aft along the 36-foot axis，how will the value of the moment of inertia of the free surface be affected?（）
A
The moment of inertia would remain unchanged
B
The moment of inertia would be 1/4 its original value
C
The moment of inertia would be 1/2 the original value
D
None of the above
参考解析
解析：
暂无解析
相关考题：
What is head tank in the closed cooling water system used for?A.for the release of air from the cooling waterB.providing expansion room for heated cooling waterC.a place for implementing water and water treatment agentD.all of the above
Tomas plans to construct a circular fishpond with a diameter of 9 ft. Which of the following is closest to the length, in feet, of the decorative fencing that Tomas needs to enclose the fishpond along its perimeter?A.15B.19C.29D.64E.255
Because the circulating water is in a closed loop,_______is installed to cater for expansion and contraction of the water at different conditions of operation.A.an expansion jointB.a drain tankC.a head tankD.a contraction tank
_____ allows for expansion and water make up in the water cooling system.A.A top tankB.A head tankC.A head valveD.A drain tank
When started, a complete oily water separating unit is first filled ______. The oily water mixture is then pumped through the inlet pipe into the coarse separating compartment.A.with dirty waterB.with clean waterC.by oily waterD.by mixed water
If you are bunkering and you close off one tank in the line of tanks being filled，the rate of flow to other open tanks on the same line will ______．A.increaseB.decreaseC.stopD.remain constant
The use of portable electrical equipment in the pumproom on tank barges is prohibited unless ______．A.The pumproom is gas-freeB.Spaces with bulkheads common to the pumproom are either gas-free，inert，filled with water，or contain grade E liquidC.All other compartments in which flammable vapors and gases may exist are closed and securedD.All of the above
单选题An emergency sea anchor may be constructed by using（）.Aa boat bucketBan air tank filled with waterCan oar and canvas weighted downDAll of the above
单选题As you approach Shreves cut-off you see Red River LandingGage (302.4 AHP) which reads 4.2 feet. Which of thefollowing statements is TRUE? （）AThis reading is at the same elevation as the 6.2 ft. mark on the gage at Head of PassesBA vessel drawing 8 ft would be able to pass over the sill at Old River LockCThis reading is 6.4 feet below the Low Water Reference PlaneDA vessel drawing 7 ft. would be able to pass through the locks at Lower Old River
单选题Where is the cooling water from the compensating tank in the cooling water system of main engine lead to?（）Adischarge side of the centrifugal pumpBsuction side of the centrifugal pumpCthe lowest point of the cooling water systemDinlet of the main engine
单选题In general, domestic flesh water tank kept under pressure by an external supply of （）.Aforced circulating pumpBcompressed airCgravity tankDbead tank
单选题The expansion tank for a diesel engine closed cooling system is designed to maintain a constant head on the system and （）.Areduce water temperatureBreduce water turbulenceCprovide an air cushionDallow for an increase in water volume as the engine warms up
单选题Normally，potable water systems are connected directly to the（）.Afire-main systemBfeed-water systemCfreshwater sanitary systemDdomestic water tank
单选题If you are bunkering and you close off one tank in the line of tanks being filled，the rate of flow to other open tanks on the same line will（）.AincreaseBdecreaseCstopDremain constant
单选题（） system is arranged to ensure that water can be drawn from any tank or the sea and discharged to any other tank or the sea as required to trim the vessel.AThe domestic waterBBilge waterCOil transferDThe ballast
单选题An emergence sea anchor may be constructed by type of extinguisher?（）.Aa boat bucketBan air tank filled with waterCan oar and canvas weighted downDAll of the above
单选题The highest pressure in any closed diesel engine freshwater cooling system is at the （）.Ajacket water outletBexpansion tank inletCheat exchanger inletDcooling water pump outlet
单选题In a diesel engine cooling system, the high temperature alarm contact maker will be activated on excessively high water discharge temperature from the （）Araw water pump dischargeBexpansion tank outletCcooling water heat exchangerDoutlet engine jacket water outlet
单选题The reciprocating pump can’t draw water from a tank may be caused by （）.Aleaky pipeBopened inlet valveCtoo much water in tankDNone of the above
单选题When started, a complete oily water separating unit is first filled （）The oily water mixture is then pumped through the inlet pipe into the coarse separating compartment.Awith dirty waterBwith clean waterCby oily waterDby mixed water
单选题In any diesel engine closed freshwater cooling system, the lowest pressure exists at the （）.Ajacket water outletBcooling water pump outletCheat exchanger outletDexpansion tank atmospheric vent
单选题A vessel is equipped with cross-connected deep tanks.In which situation should the crossconnection valve be closed?（）.AThe tank lie above the waterline and are filledBThe tank are partically filled with dry cargoCThe tanks are partially filled with liquid cargoDThe tanks are filled and lie below the waterline
单选题A rectangular fish tank has a base 2 feet wide and 3 feet long. When the tank is partially filled with water, a solid cube with an edge length of 1 foot is placed in the tank. If no overflow of water from the tank is assumed, by how many inches will the level of the water in the tank rise when the cube becomes completely submerged?A1/6B1/2C2D3E4