| 41. | The landing gear is a retractable monowheel and a tail skid.
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| 42. | The landing gear is of a retractable conventional landing gear configuration.
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| 43. | The monowheel was non-retractable and the wingtip salmons removed.
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| 44. | It has a retractable tricycle landing gear and a low tailplane.
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| 45. | A retractable table was also part of the drawing room furnishings.
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| 46. | It also features a retractable bowsprit for the large asymmetrical spinnaker.
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| 47. | The largest stadium with a retractable roof is the SkyDome in Toronto.
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| 48. | The Mariners are building a new outdoor stadium with a retractable roof.
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| 49. | Meet the latest threat to the traditional retractable tape measure.
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| 50. | The two-seater features an easily retractable hardtop and supercharged engine.
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