An air mass is termed warm if ______.A.it is above 70°FB.the ground over which it moves is cooler than the airC.it originated in a high pressure areaD.it originated in a low pressure area

题目

An air mass is termed warm if ______.

A.it is above 70°F

B.the ground over which it moves is cooler than the air

C.it originated in a high pressure area

D.it originated in a low pressure area

相似考题

1.Temperature and moisture characteristics are modified in a warm or cold air mass due to ______.A.pressure changes in the air massB.movement of the air massC.the heterogeneous nature of the air massD.upper level atmospheric changes

2.Steam smoke will occur when ______.A.extremely cold air from shore passes over warmer waterB.warm dry air from shore passes over cooler waterC.cold ocean water evaporates into warm airD.cool rain passes through a warm air mass

3.The direction in which a vessel is steered is the course. The path actually followed is the ______.A.routeB.trackC.headingD.course over the ground

4.The first indications a mariner will have of the approach of a warm front will be ______.A.large cumulonimbus (thunderclouds) building upB.high cirrus clouds gradually changing to cirrostratus and then to altostratusC.fog caused by the warm air passing over the cooler waterD.low dark clouds accompanied by intermittent rain

更多“An air mass is termed warm if ______.A.it is above 70°FB.the ground over which it moves is ”相关问题

  • 第1题：

    In many areas "atoll" clouds (clouds of vertical development) are produced over small islands. These are the result of ______.

    A.rising air currents produced by the warm islands

    B.warm air from the sea rising over higher land areas

    C.cool land air mixing with warm sea air

    D.descending air over the islands


    正确答案：A

  • 第2题：

    A frontal thunderstorm is caused by ______.

    A.pronounced local heating

    B.wind being pushed up a mountain

    C.a warm air mass rising over a cold air mass

    D.an increased lapse rate caused by advection of warm surface air


    正确答案：C
    雷暴天气是由于暖气团的上升超过冷气团造成的。

  • 第3题：

    Advection fog is most commonly caused by ______.

    A.air being warmed above the dew point

    B.saturation of cold air by rain

    C.a rapid cooling of the air near the surface of the Earth at night

    D.warm moist air being blown over a colder surface


    正确答案：D
    平流雾最普遍产生于温暖潮湿的空气吹过较冷的水面。

  • 第4题：

    单选题
    Advection fog is most commonly caused by（）.
    A

    air being warmed above the dew point

    B

    saturation of cold air by rain

    C

    a rapid cooling of the air near the surface of the Earth at night

    D

    warm moist air being blown over a colder surface


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    In many areas atoll clouds (clouds of vertical development) are produced over small islands. These are the result of（）.
    A

    rising air currents produced by the warm islands

    B

    warm air from the sea rising over higher land areas

    C

    cool land air mixing with warm sea air

    D

    descending air over the islands


    正确答案： B
    解析： 暂无解析

  • 第6题：

    单选题
    Clouds form（）.
    A

    as a mass of warm，humid air rises into the atmosphere and cools，condensing moisture into small droplets

    B

    as winds blow across bodies of water，the sun causes the moisture to be absorbed and move upward forming clouds

    C

    dry air compresses moisture from the atmosphere into clouds

    D

    when the relative humidity of the atmosphere is low


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    An air mass is termed warm if（）.
    A

    it is above 70°F

    B

    the ground over which it moves is cooler than the air

    C

    it originated in a high pressure area

    D

    it originated in a low pressure area


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    The resistance experienced when one body moves over another, ______ it is in contact, is called frictional force.
    A

    to which

    B

    where

    C

    with which  

    D

    while


    正确答案： D
    解析：
    当一个物体在和它接触的物体上运动时，产生的阻力叫做摩擦力。in contact with 与…联系，接触。此处，which引导定语从句，修饰another，从句中的it指one body。

  • 第9题：

    单选题
    Steam smoke will occur when（）.
    A

    extremely cold air from shore passes over warmer water

    B

    warm dry air from shore passes over cooler water

    C

    cold ocean water evaporates into warm air

    D

    cool rain passes through a warm air mass


    正确答案： A
    解析： 暂无解析

  • 第10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11题：

    单选题
    Following an overhaul of a crosshead type diesel engine, the engine is jacked over with the turning gear as part of the pre-start procedure, which of the listed pre-start procedures should be carried out?（）
    A

    Ensure proper cylinder lube oil flow

    B

    Open all air space drain cocks

    C

    Open all indicator valves

    D

    all of the above


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    The fog produced by warm moist air passing over a cold surface is called（）.
    A

    conduction fog

    B

    radiation fog

    C

    frontal fog

    D

    advection fog


    正确答案： C
    解析： 暂无解析

  • 第13题：

    The disadvantage（s）of using chain lashing on heavy vehicles aboard Ro-Ro vessels is that ______．

    A.It is heavy

    B.The links lose strength if placed over corners

    C.It does not absorb shock

    D.All of the above


    正确答案：D

  • 第14题：

    A warm air mass is characterized by______．

    A.stability

    B.instability

    C.gusty winds

    D.good visibility


    正确答案：A
    暖气团表现为较稳定的特征。

  • 第15题：

    单选题
    A warm air mass is characterized by（）.
    A

    stability

    B

    instability

    C

    gusty winds

    D

    good visibility


    正确答案： A
    解析： 暂无解析

  • 第16题：

    单选题
    Temperature and moisture characteristics are modified in a warm or cold air mass due to （）.
    A

    pressure changes in the air mass

    B

    movement of the air mass

    C

    the heterogeneous nature of the air mass

    D

    upper level atmospheric changes


    正确答案： B
    解析： 暂无解析

  • 第17题：

    单选题
    A frontal thunderstorm is caused by（）.
    A

    pronounced local heating

    B

    wind being pushed up a mountain

    C

    a warm air mass rising over a cold air mass

    D

    an increased lapse rate caused by advection of warm surface air


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    Which statement is TRUE concerning the gooseneck（）.
    A

    It is a sailing maneuver which brings the vessel's head through the wind

    B

    It connects the boom to the mast and allows the boom to swing freely

    C

    It is a sailing condition where there is a loss of air flow over the sails

    D

    None of the above


    正确答案： A
    解析： 暂无解析

  • 第19题：

    单选题
    The first indications a mariner will have of the approach of a warm front will be （）.
    A

    large cumulonimbus (thunderclouds) building up

    B

    high cirrus clouds gradually changing to cirrostratus and then to altostratus

    C

    fog caused by the warm air passing over the cooler water

    D

    low dark clouds accompanied by intermittent rain


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    Which condition is necessary for a substance to burn?（）
    A

    The temperature of the substance must be equal to or above its fire point

    B

    The air must contain oxygen in sufficient quantity

    C

    The mixture of vapors with air must be within the explosive range

    D

    All of the above


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    （）is the most widespread type likely to be encountered at sea and is caused by relatively warm air being cooled by flowing over a cooler sea surface.
    A

    FRONTAL FOG

    B

    MIXING FOG

    C

    ADVECTION FOG

    D

    RADIATION FOG


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    The direction in which a vessel is steered is the course. The path actually followed is the （）.
    A

    route

    B

    track

    C

    heading

    D

    course over the ground


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    The figure that the volume of air at BDC is divided by the volume of air at TDC is termed as（）.
    A

    ignition ratio

    B

    power ratio

    C

    compression ratio

    D

    injection ratio


    正确答案： B
    解析： 暂无解析

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