单选

If you must jump from a ship,your posture should include ______.

  • A.holding down the life preserver against the chest with one arm crossingthe other,covering the mouth and nose with a hand,and feet together holding
  • B.knees bent and held close to the body with both arms around legs
  • C.body straight and arms held tightly at the sides for feet first entry into the water
  • D.both hands holding the life preserver below the chin,with knees bent,and legs crossed
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