Inside an aeroplane, flying at a high altitude, – McqOptions

MCQOPTIONS

1.	Inside an aeroplane, flying at a high altitude,
A.	the pressure is the same as that outside
B.	normal atmospheric pressure is maintained by the use of air pumps
C.	the pressure inside is less than the pressure outside
D.	normal humidity and partial vacuum are maintained
Answer» C. the pressure inside is less than the pressure outside

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