MCQOPTIONS
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| 1. |
The stratosphere is said to be ideal for flying jet aircraft. This is because |
| A. | this layer is rich in ozone which reduces fuel consumption |
| B. | the temperature is constant and ideal for aircraft engine efficiency |
| C. | this layer is out of the firing range of anti-aircraft guns |
| D. | of the absence of clouds and other weather phenomena |
| Answer» E. | |