Thecomponentofbloodwhichismostdirectlyinvolvedinthetransportofoxygenthroughoutthebodyis（）
A. theredbloodcells
B. theplasma
C. hemoglobin
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Whatcauseshypoxia?（）
A. Excessivecarbondioxideintheatmosphere.
B. Anincreaseinnitrogencontentoftheairathighaltitudes.
C. Adecreaseofoxygenpartialpressure.
Whatisasymptomofcarbonmonoxidepoisoning?（）
A. Rapid,shallowbreathing.
B. Painandcrampingofthehandsandfeet.
C. Dizziness.
Acommonsymptomofcarbonmonoxidepoisoningis（）
A. impairmentofVIS
B. tinglinghandsandarms
C. decreasedbodytemperature
Whichofthefollowingwillincreasesusceptibilitytohypoxia?（）
A. smokingandalcohol
B. fatigue
C. smokingandalcoholaswellasfatigue.
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