Hypoxiaisalwaysaccompaniedby（）
A. dizziness
B. adegradationintheperformanceofapilot
C. vomiting
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Hypoxiamaybecausedby（）
A. flyingwithaheadcold
B. breathingtooquicklyand/ortoodeeplyfortherequirementsofthebody
C. flyingatanaltitudewherethepartialpressureofoxygenistoolow
Ifapilotsuspectsthathe/sheissufferingtheeffectsofhypoxia,themostappropriateremedywouldbe（）
A. usesupplementoxygenordescendimmediatelytoalowlevel
B. voluntarilyincreasethedepthofbreathingtoinducemoreoxygenintothelungs
C. voluntarilyincreasethebreathingratetoincreasetheoxygenuptake
Whichofthefollowingstatementscorrectlydescribesthealleviationoftheeffectsofhypoxiaatcabinaltitudesabout10,000ftwithouttheuseofsupplementaloxygen?（）
A. rapidshallowbreathing
B. theeffectscannotbealleviated
C. slowdeepbreathing
Oneoftheeffectsofhypoxiaisadegradationofnightvision.Thiseffectbeginsatabout（）
A. 5,000feet
B. 10,000feet
C. 8,000feet
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