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 th

题目
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?
A

1/6

B

1/2

C

2

D

3

E

4

相似考题

1.A tank has been sealed and unventilated(不通风的) for a long period of time. Which of the following conditions does this indicate?A.The tank is safe to enterB.The tank is especially dangerous to enterC.Carbon monoxide(一氧化物) is presentD.Water vapor present when the tank was sealed has oxidized(使氧化)

2.When removing the cap from a sounding tube on a ship，the sound of air escaping indicates the tank ______．A.Is fullB.May be partially floodedC.Level has droppedD.Is completely flooded

3.换料水（贮存）箱 refueling water (storage) tank

4.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 unchangedB.The moment of inertia would be 1/4 its original valueC.The moment of inertia would be 1/2 the original valueD.None of the above

更多“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 th”相关问题

  • 第1题：

    单选题
    When measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery，check it（）.
    A

    one meter from the tank bottom and one meter below the tank top

    B

    one half the ullage of the tank and one meter below the tank top

    C

    one half the ullage of the tank and one meter above the tank bottom

    D

    at three meter intervals from the tank top to the bottom


    正确答案： A
    解析： 暂无解析

  • 第2题：

    单选题
    What is head tank in the closed cooling water system used for?（）
    A

    for the release of air from the cooling water

    B

    providing expansion room for heated cooling water

    C

    a place for implementing water and water treatment agent

    D

    all of the above


    正确答案： B
    解析： 暂无解析

  • 第3题：

    单选题
    When checking the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery，the atmosphere must be sampled（）.
    A

    one meter from the tank bottom and one meter below the tank top

    B

    one half the ullage of the tank and one meter below the tank top

    C

    one half the ullage of the tank and one meter above the tank bottom

    D

    at three meter intervals from the tank top


    正确答案： B
    解析： 暂无解析

  • 第4题：

    单选题
    Vents are led from the engine to the head tank for the release of （） from the cooling water.
    A

    air

    B

    heat

    C

    sludge

    D

    steam


    正确答案： C
    解析： 暂无解析

  • 第5题：

    单选题
    In a domestic fresh water system, the pump starters are controlled by （） switches which operate when the pressure in the tank varies within predetermined limits as water is drawn off.
    A

    water level

    B

    water flow

    C

    temperature

    D

    pressure


    正确答案： D
    解析： 暂无解析

  • 第6题：

    单选题
    Normally，potable water systems are connected directly to the（）.
    A

    fire-main system

    B

    feed-water system

    C

    freshwater sanitary system

    D

    domestic water tank


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    An amusement park ride has an elevator that brings riders to the top of a tower. Riders step off the elevator onto a straight slide, which leads from the top of the tower to level ground. The base of the slide is 400 feet from the base of the tower and the length of the slide is 500 feet. If the elevator rises at a rate of 10 feet per second, how many seconds does the elevator take to rise from the ground to the top of the slide?
    A

    30

    B

    40

    C

    50

    D

    150

    E

    300


    正确答案： B
    解析：
    因为塔，地面和滑梯形成一个直角三角形，根据勾股定理可以得出a2+(400)2＝(500)2，a=300，也就是滑梯的高，因为电梯的速度为每秒10英尺，所以10t=300，所以需要30秒的时间。

  • 第8题：

    单选题
    Is this a （）(淡水) tank?
    A

    bilge water

    B

    ballast water

    C

    fresh water

    D

    sea water


    正确答案： D
    解析： 暂无解析

  • 第9题：

    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


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    A tank has been sealed and unventilated for a long period of timeWhich of the following conditions does this indicate?（）
    A

    The tank is safe to enter

    B

    The tank is especially dangerous to enter

    C

    Carbon monoxide is present

    D

    Water vapor present when the tank was sealed has oxidized


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    Expansion tank should be used to remove （） from cooling water.
    A

    scale

    B

    sludge

    C

    chemicals

    D

    air


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    The sludge tank installed in the diesel engine room is used to collect（） Ⅰ.sludge from the fuel oil settling tanks ad centrifuge Ⅱ.water that has been collected in the settling tank
    A

    Ⅰonly

    B

    Ⅱ only

    C

    bothⅠand Ⅱ

    D

    neitherⅠor Ⅱ


    正确答案： C
    解析： 暂无解析

  • 第13题：

    单选题
    What action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?（）
    A

    The tank must be gas freed

    B

    The tank must be ballasted

    C

    The tank must be vented to the atmosphere

    D

    The bypass valve must also be closed


    正确答案： C
    解析： 暂无解析

  • 第14题：

    单选题
    You are cleaning the tanks after carrying a cargo of crude oil. Which statement is TRUE? （）.
    A

    Washing water should be recirculated if possible because it has the same electric potential as the cargo tank being cleaned

    B

    The hoses to portable cleaning machines should be disconnected before the machines are removed from the tank

    C

    The principal hazard with steaming cargo tanks is raising the ambient temperature above the flame point of the cargo residue

    D

    Steam cleaning and water washing are both capable of generating electrostatic charges within a tank


    正确答案： C
    解析： 暂无解析

  • 第15题：

    单选题
    The reciprocating pump can’t draw water from a tank may be caused by （）.
    A

    leaky pipe

    B

    opened inlet valve

    C

    too much water in tank

    D

    None of the above


    正确答案： C
    解析： 暂无解析

  • 第16题：

    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.
    A

    The domestic water

    B

    Bilge water

    C

    Oil transfer

    D

    The ballast


    正确答案： D
    解析： 暂无解析

  • 第17题：

    单选题
    The domestic fresh water pump starters are controlled by pressure switches which operate when the pressure in the tank varies within predetermined limits as water is drawn offThe word “which” means （）.
    A

    starters

    B

    pressure switches

    C

    pressure

    D

    water


    正确答案： D
    解析： 暂无解析

  • 第18题：

    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 （）
    A

    raw water pump discharge

    B

    expansion tank outlet

    C

    cooling water heat exchanger

    D

    outlet engine jacket water outlet


    正确答案： A
    解析： 暂无解析

  • 第19题：

    单选题
    How dose water enter the crankcase of a diesel engine?（）
    A

    Through the crankcase exhauster

    B

    As water vapor contained in blow-by

    C

    Demulsifying lube oil passing through the main bearings

    D

    Condensation from vapor formed in the expansion tank


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    In general, domestic flesh water tank kept under pressure by an external supply of （）.
    A

    forced circulating pump

    B

    compressed air

    C

    gravity tank

    D

    bead tank


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    While testing a cargo tank，your oxygen indicator reads 25% oxygen in the tank. You would then （）.
    A

    enter the tank safely

    B

    suspect the accuracy of the reading

    C

    ventilate the tank

    D

    test for nitrogen


    正确答案： A
    解析： 暂无解析

  • 第22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 filled

    B

    The tank are partically filled with dry cargo

    C

    The tanks are partially filled with liquid cargo

    D

    The tanks are filled and lie below the waterline


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    A solid metal cube of edge 3 feet is placed in a rectangular tank whose length, width, and height are 3, 4, and 5 feet, respectively. What is the volume, in cubic feet, of water that the tank can now hold?
    A

    20

    B

    27

    C

    33

    D

    48

    E

    60


    正确答案： B
    解析：
    根据题意，长方体水槽的体积为3×4×5 =60立方英尺，而立方体占的面积为 33 =27 立方英尺，所以如今水槽的储水量为 60-27 =33 立方英尺。

相关内容