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1. |
Generally speaking for better efficiency of IC engine the valves must |
A. | open before the beginning of a stroke and close before the end of a stroke |
B. | open after the beginning of a stroke and close before the end of a stroke |
C. | open after the beginning of a stroke and close after the end of a stroke |
D. | open before the beginning of a stroke and close after the end of a stroke |
E. | None of the above |
Answer» E. None of the above | |