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When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold，you should ______.A.secure all ventilationB.shut down the exhaust blowersC.shut down the intake blowersD.ventilate the cargo holds

题目

When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold，you should ______.

A.secure all ventilation

B.shut down the exhaust blowers

C.shut down the intake blowers

D.ventilate the cargo holds

相似考题

1.Which of the processes listed would be the most satisfactory method to use to lower the humidity of the air being circulated by an air conditioning system?A.Cooling the air to a temperature just above dew pointB.Heating the air to a point at which moisture will boil off ,then re-cooling itC.Cooling the air to a point below dew point, then reheating itD.Heating the air and then cooling it to a point below dew point

2.Hygroscopic cargoes should be ventilated when ______.A.going from a warm to a cold climateB.the dew point of the outside air is greater than the dew point of the air in the holdC.the dew point of the air in the hold is very lowD.the outside dew point is 16°C and the cargo temperature is 12°C

3.Sweat damage will occur in a cargo hold containing machinery parts when ______.A.the outside air is colder than the cargo．B.the air temperature of the hold is higher than the outside air temperature．C.the dew point of the hold is higher than the temperature of the cargo．D.the dew point of the outside air is lower than the temperature of the cargo

4.As the amount of moisture in the air increases, the difference between the dry bulb and wet bulb temperatures will ______.A.increaseB.decreaseC.remain unchangedD.be greatest at dew point

更多“When the dew point of the outside air is lower than or equal to the dew point of the air i ”相关问题

  • 第1题：

    The dew point is reached when the ______.

    A.temperature of the air equals the temperature of the seawater

    B.atmospheric pressure is 14.7 lbs. per square inch

    C.relative humidity reaches 50%

    D.air becomes saturated with water vapor


    正确答案：D

  • 第2题：

    The moisture equilibrium chart can be used to determine the ______．

    A.Absolute moisture content of the air surrounding a hygroscopic cargo when moisture equilibrium exists

    B.Dew point temperature that the air surrounding a hygroscopic commodity will have when in moisture equilibrium with that commodity

    C.Enthalpy of the air surrounding a hydroscopic cargo which is in moisture equilibrium with the cargo

    D.Temperature at which moisture equilibrium will occur in a cargo hold containing a hygroscopic cargo


    正确答案：B

  • 第3题：

    Fog is likely to occur when there is little difference between the dew point and the ______.

    A.relative humidity

    B.air temperature

    C.barometric pressure

    D.absolute humidity


    正确答案：B
    当露点温度与空气温度有轻微的差异时，雾就很可能发生。

  • 第4题：

    单选题
    As the amount of moisture in the air increases, the difference between the dry bulb and wet bulb temperature will （）.
    A

    increase

    B

    decrease

    C

    remain unchanged

    D

    be greatest at dew point


    正确答案： B
    解析： 暂无解析

  • 第5题：

    单选题
    The dew point temperature is（）.
    A

    always higher than the air temperature

    B

    always lower than the air temperature

    C

    equal to the difference between the wet and dry bulb temperatures

    D

    the temperature at which the air is saturated with water vapor


    正确答案： D
    解析： 暂无解析

  • 第6题：

    单选题
    The dew point is reached when the（）.
    A

    temperature of the air equals the temperature of the seawater

    B

    atmospheric pressure is 14.7 lbs. per square inch

    C

    relative humidity reaches 50%

    D

    air becomes saturated with water vapor


    正确答案： B
    解析： 暂无解析

  • 第7题：

    单选题
    When air is at its dew point it is at its（）
    A

    lowest absolute humidity

    B

    lowest relative humidity

    C

    highest absolute humidity

    D

    highest relative humidity


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    Hygroscopic cargoes should be ventilated when（）.
    A

    going from a warm to a cold

    B

    the dew point of the outside air is greater than the dew point of the air in the hold

    C

    the dew point of the air in the hold is very low

    D

    the outside dew point is 16°C and the cargo temperature is 12°C


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    Which of the processes listed would be the most satisfactory method to use to lower the humidity of the air being circulated by an air conditioning system?（）
    A

    Cooling the air to a temperature just above dew point

    B

    Heating the air to a point at which moisture will boil off ,then re-cooling it

    C

    Cooling the air to a point below dew point, then reheating it

    D

    Heating the air and then cooling it to a point below dew point


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    Hygroscopic cargoes should be ventilated when（）.
    A

    going from a warm to a cold climate

    B

    the dew point of the outside air is greater than the dew point of the air in the hold

    C

    the dew point of the air in the hold is very low

    D

    the outside dew point is 16℃ and the cargo temperature is 12℃


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold，you should（）.
    A

    secure all ventilation

    B

    shut down the exhaust blowers

    C

    shut down the intake blowers

    D

    ventilate the cargo holds


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    While on watch，you notice that the air temperature is dropping and is approaching the dew point.Which type of weather should be forecasted（）.
    A

    Hail

    B

    Heavy rain

    C

    Sleet

    D

    Fog


    正确答案： B
    解析： 暂无解析

  • 第13题：

    Sweat damage in a hatch full of canned goods in cartons will occur when the ______．

    A.Air temperature is higher than the temperature of the cargo

    B.Air temperature is lower than the temperature of the cargo

    C.Dew point is higher than the temperature of the cargo

    D.Dew point is lower than the temperature of the cargo


    正确答案：C

  • 第14题：

    As the temperature for a given mass of air increases, the ______.

    A.dew point increases

    B.dew point decreases

    C.relative humidity increases

    D.relative humidity decreases


    正确答案：D
    当一特定气团的温度上升时，相对湿度减小。

  • 第15题：

    单选题
    What occurs when rising air cools the dew point?（）
    A

    advection fog forms

    B

    humidity decrease

    C

    wind increase

    D

    Cloud form


    正确答案： D
    解析： 暂无解析

  • 第16题：

    单选题
    The dew point of air is reached when the wet bulb temperature is （）.
    A

    Twice the dry bulb temperature

    B

    10℃ above the dry bulb temperature

    C

    5℃ above the dry bulb temperature

    D

    Equal to the dry bulb temperature


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    As the temperature of the air reaches the dew point，（）.
    A

    rain must develop

    B

    fog may form

    C

    it begins to snow

    D

    water freezes


    正确答案： C
    解析： 暂无解析

  • 第18题：

    单选题
    Sweat damage will occur in a cargo hold containing machinery parts when（）.
    A

    the outside air is colder than the cargo

    B

    the air temperature of the hold is higher than the outside air temperature

    C

    the dew point of the hold is higher than the temperature of the cargo

    D

    the dew point of the outside air is lower than the temperature of the cargo


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    Fog forms when the air（）.
    A

    is 50% water saturated

    B

    is 90% water saturated

    C

    temperature is greater than the dew point temperature

    D

    temperature is equal to，or below the dew point temperature


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    Fog is likely to occur when there is little difference between the dew point and the（）.
    A

    relative humidity

    B

    air temperature

    C

    barometric pressure

    D

    absolute humidity


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    Hygroscopic cargoes should be ventilated when（）.
    A

    going from a warm to a cold climate

    B

    the dew point of the outside air is greater than the dew point of the air in the hold

    C

    the dew point of the air in the hold is very low

    D

    the outside dew point is 16°C and the cargo temperature is 12°C


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    A space should be ventilated when（）.
    A

    The cargo's temperature is colder than the dew point of the air in the space

    B

    The cargo's temperature is warmer than the dew point of the air in the space

    C

    The dew point of the air in the space is lower than the dew point of the outside air

    D

    All of the above


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    When air is at its dew point it（）.
    A

    will contain no additional moisture

    B

    has the lowest relative humidity

    C

    cannot keep up its moisture

    D

    has a low absolute humidity


    正确答案： D
    解析： 暂无解析

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