| 41. | However, they are more efficient than most internal combustion engines.
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| 42. | But they'd better repeal the laws of internal combustion first.
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| 43. | Such magnetos are used to generate currents for the ignition of internal combustion engines.
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| 44. | To many a scientific purist and environmentalist, the internal combustion engine is a bust.
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| 45. | On internal combustion engines one fuel is gasoline or hydrogen.
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| 46. | Ploiesti's oil boom began well before the internal combustion engine.
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| 47. | As time passed, internal combustion engined buses became more competitive.
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| 48. | Hybrids are cars that combine an internal combustion engine and a battery-powered electric motor.
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| 49. | Most rotary push mowers are powered by internal combustion engines.
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| 50. | It was certainly the first truly successful internal combustion locomotive.
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