Which of the following symptoms may indicate hypoxia?

Question

PPL(A) English - Private Pilot License - Human factor and limitations - Which of the following symptoms may indicate hypoxia?

QuizVDS · Accepted Answer

Blue discolouration of lips and fingernails

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Joint pain in knees and feet

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Muscle cramps in the upper body area

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Blue marks all over the body

PPL(A) EN: Which of the following symptoms may indicate hypoxia?