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

试题出自试卷《11规则大副航海英语单选题(1)》

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