Airliners generally cruise between about Mach 0.8 and Mach 0.9, at cruising altitudes of 30,000 to 40,000 feet. Which of these commercial airliners is/was capable of supersonic flight (more than the speed of sound)?

Airliners generally cruise between about Mach 0.8 and Mach 0.9, at cru

1.	Airliners generally cruise between about Mach 0.8 and Mach 0.9, at cruising altitudes of 30,000 to 40,000 feet. Which of these commercial airliners is/was capable of supersonic flight (more than the speed of sound)?
A.	McDonnell Douglas MD80
B.	Airbus A380
C.	Concorde
D.	Boeing 777
Answer» D. Boeing 777

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Airliners generally cruise between about Mach 0.8 and Mach 0.9, at cruising altitudes of 30,000 to 40,000 feet. Which of these commercial airliners is/was capable of supersonic flight (more than the speed of sound)?

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