A.Bernoulli ’s principle have not applied in the aviation.When the velocity increase, pressure decrease.
B.Bernoulli’s principle is the only scientific principle related to flight.
C.Airfoil can be considered as a part of venturi.
A.time and velocity of a fluid in motion
B.veloc ity and distance of a motion fluid
C.pressure and friction of a ’ liquid
D.velocity and pressure of motion fluid
A.There is
B.Here is
C.This are
D.There are
A.great
B.greatly
C.greatest
D.greater
A.the pressure differential between the upper and lower surface of a wing.
B.the high veloc ity of air below the lower wing surface
C.the small area of upper wing surface
D.the large area of lower sing surface
A.the basic idea is noise
B.the basic idea is well voice
C.the basic idea is correct
D.the basic idea is hearing
A.as
B.than
C.that
D.to
A.be classified
B.classify
C.is classified
D.are classified
A.to
B.for
C.upon
D.at
A.with
B.to
C.in
D.at
A.divided by
B.multiplied by
C.time by
D.plus by
A.usual
B.general
C.typical
D.particular
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