dual fuel

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Across
  1. 3. the act of conforming, acquiescing, or yielding.
  2. 5. the state or condition of being aware; having knowledge; consciousness
  3. 7. the general course or prevailing tendency; drift
  4. 8. the ability or depended on, as for accuracy, honesty, or achievement.
  5. 10. generally flat or unruffled, as a calm sea.
  6. 11. a person who possess
Down
  1. 1. suitable or appropriate; proper or becoming.
  2. 2. having or showing no regard; heedless; unmindful
  3. 4. designed to use a lean mixture of fuel and air in order to reduce petrol consumption and exhaust emission
  4. 6. smoothly continuous or uniform in quality; combined in an inconspicuous way
  5. 9. a colorless, odorless, gaseous element that constitutes about four-fifths of the volume of the atmosphere