MCQOPTIONS
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| 1. |
Inside an aeroplane, flying at a high altitude? |
| A. | The pressure is the same as that outside |
| B. | Normal atmospheric pressure is maintained by the use of air pumps |
| C. | The pressure inside is less than the pressure outside |
| D. | Normal humidity and partial vacuum are maintained |
| Answer» C. The pressure inside is less than the pressure outside | |