Hypoxiaistheresultofwhichoftheseconditions?（）
A. Excessiveoxygeninthebloodstream.
B. Insufficientoxygenreachingthebrain.
C. Excessivecarbondioxideinthebloodstream.
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Toovercomethesymptomsofhyperventilation,apilotshould（）
A. Increasethebreathingrate.
B. Swalloworyawn.
C. Slowthebreathingrate.
Hypoxiasusceptibilityduetoinhalationofcarbonmonoxideincreasesas（）
Altitudeincreases.
B. Oxygendemandincreases.
C. Humiditydecreases.
Inphysiology,twophasesofbreathmeans（）
A. Theairexchangetakingplaceinlungandtheairexchangebetweenthebloodandthetissue
B. Theinhalingofoxygenandtheexhalingofcarbondioxide.
C. Thatthepilotshouldmaketwodeepbreatheswhenunderstrain.
ThephenomenonofhypoxiacausedbypositiveGdominoeffectmaybecalled（）
Accelerationhypoxia
B. Anemichypoxia
Circulatingstagnationhypoxia
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