(A) higher at ground (X)
(B) higher at high altitudes ()
(C) same at all altitudes (X)
(D) higher at high speed (X)
(E) lower at low speed (X)
Answers: The efficiency of jet engine is higher at high altitudes.
(A) higher at ground (X)
(B) higher at high altitudes ()
(C) same at all altitudes (X)
(D) higher at high speed (X)
(E) lower at low speed (X)
Answers: The efficiency of jet engine is higher at high altitudes.
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