The air is （）(有毒的).A、humidB、dampC、toxicD、mould

题目

The air is （）(有毒的).

  • A、humid
  • B、damp
  • C、toxic
  • D、mould
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.In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?A.Noise coming from that air starting valveB.Continuous operation of the starting air compressorC.Zero air pressure in the air starting systemD.Overheated starting air pipe to the cylinder head

3.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

4.In Leon Nacson’s view, air and water are our Number One priorities for the following reasons except ().A、he cannot understand why people are polluting air and waterB、there will definitely be no fresh air and clean water for future generationsC、we would run out of air and water if we didn’t stop polluting themD、air and water polluting are the current and futu

更多“The air is （）(有毒的).”相关问题

  • 第1题：

    Diesel engines obtain combustion air through turbo chargers，blowers，or ______．

    A.Air starters

    B.Carburetors

    C.Natural aspiration

    D.Air receivers


    正确答案：C

  • 第2题：

    第一双搭载气垫的NIKE篮球鞋是？（）

    • A、AIR FORCE 1
    • B、AIR GO LWP
    • C、AIR MORE UPTEMPO
    • D、BLAZER

    正确答案:A

  • 第3题：

    Air cargo is （）

    • A、air transport      
    • B、air freight     
    • C、air delivery      
    • D、plane

    正确答案:B

  • 第4题：

    单选题
    Air blowing from the intake air filter of an operating air compressor indicates （）.
    A

    broken inlet valves

    B

    broken discharge valves

    C

    pulsations in the air distribution system

    D

    overloading of the air distribution system


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    Which of the following methods is used to prevent throttling of compressed air through the diesel engine air starting valves?（）
    A

    Holding the valve open for a long period

    B

    Increasing the starting air pressure used

    C

    Opening the stating air valve quickly

    D

    Reducing the starting air valve size


    正确答案： D
    解析： 暂无解析

  • 第6题：

    单选题
    The engine will fail to start unless （）.
    A

    the pressure of the starting air is high enough

    B

    there is enough air in the air reservoirs

    C

    the air is supplied into the cylinders in the appropriate sequence

    D

    all of the above


    正确答案： C
    解析： 暂无解析

  • 第7题：

    单选题
    （） is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.
    A

    An air receiver

    B

    An operating valve

    C

    An automatic valve

    D

    An air distributor


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    Which condition indicates the air side fouling of an after-cooler on a turbocharged diesel engine?（）
    A

    An increased air temperature differential between the cooler inlet and outlet

    B

    A decrease in the air pressure differential across the cooler

    C

    Excessive condensate forming in the air box

    D

    A decrease in the air temperature differential between the cooler inlet and outlet


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    （） supplies pilot air to control the cylinder air start valves.
    A

    An air compressor

    B

    An indicator cock

    C

    An air distributor

    D

    A safety valve


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    Disastrous explosions have been caused by accumulations of oil or oil vapour in air lines not drainedAccording to the above sentence, which of the following statements is true?（）
    A

    Oil vapour in air piping are dangerous

    B

    Explosion will cause oil vapouring in air lines

    C

    Oil vapour in air piping should be drained

    D

    Oil in air piping should not be drained


    正确答案： A
    解析： 暂无解析

  • 第11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12题：

    单选题
    If an air compressor is used to supply air primarily to the combustion control system and other pneumatic controllers, the entire system is known as the （）.
    A

    control air system

    B

    forced draft air system

    C

    supply air system

    D

    ships service air system


    正确答案： A
    解析： 暂无解析

  • 第13题：

    Air Jordan 32不仅能够引领场外搭配的潮流还具有着出众的实战性能，它的设计灵感来源于以下哪双Air Jordan系列球鞋？（）

    • A、Air Jordan1
    • B、Air Jordan2
    • C、Air Jordan3
    • D、Air Jordan4

    正确答案:B

  • 第14题：

    SP19 NSW CNY系列中会出现以下哪些鞋款？（）

    • A、AIR MAX 98
    • B、AIR MAX 270
    • C、AIR MAX 90
    • D、AIR FIGHTPOSITE

    正确答案:A,B,D

  • 第15题：

    ATA100中ATA是什么的缩写？

    • A、Air Transport Association
    • B、Air Training Association
    • C、Air Traffic Association

    正确答案:A

  • 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
    Cumulonimbus clouds are formed by（）.
    A

    vertical air movements

    B

    heavy rainstorms

    C

    horizontal air movements

    D

    any movement of moist air


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    Diesel engine air start system check valves are opened by （）
    A

    an air start cam

    B

    cylinder compression pressure

    C

    starting air pressure

    D

    valve springs


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    If an air compressor is used to supply compressed air to outlets throughout the engine room and on deck of a vessel, the system is known as the （）.
    A

    combustion control air system

    B

    supply air system

    C

    ships service air system

    D

    low pressure deck air system


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    Starting air for auxiliary engines may be taken directly from the main reservoirs or through （）.
    A

    an auxiliary reservoir

    B

    a controlling air bottle

    C

    an emergency air compressor

    D

    a main air compressor


    正确答案： B
    解析： 暂无解析

  • 第21题：

    单选题
    Pump up the starting air reservoirs to their maximum pressure and （）the air reservoirs and air system.
    A

    open

    B

    close

    C

    drain

    D

    vent


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?（）
    A

    noise coming from that air starting valve

    B

    continuous operation of the starting air compressor

    C

    zero air pressure in the air starting system

    D

    overheated starting air pipe to the cylinder head


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    Which of following functions is not one of the functions of air conditioner?（）
    A

    refreshing the air

    B

    making person upset

    C

    adjusting the air humidity

    D

    adjusting the air temperature


    正确答案： C
    解析： 暂无解析

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