| 31. | During later trials it was fitted with a retractable landing gear.
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| 32. | The ASW-22 has a two-wheel retractable undercarriage.
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| 33. | Hexapumas have retractable eight-centimeter claws on all six limbs.
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| 34. | Retractable headlights with circular lenses garnished a sharply raked front end.
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| 35. | Can animals with retractable claws retract them individually, or not?
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| 36. | The retractable tricycle landing gear featured dual-wheel main units.
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| 37. | The landing gear was non-retractable and included a tailwheel.
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| 38. | It was retractable when not in use, to reduce drag.
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| 39. | Most have retractable blades that can be locked to prevent injury.
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| 40. | The aircraft also features dive brakes and a retractable monowheel undercarriage.
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