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1. |
Select the correct option for an ideal rocket engine. |
A. | The exhaust gases leaving the rocket need not be axially directed |
B. | Across any cross-section normal to the nozzle axis, gas velocity need not be uniform |
C. | The gas composition can vary across the nozzle |
D. | Cryogenic propellants need to be stored at their boiling points |
Answer» E. | |