How should you signal the crane operator to dog everthing?（）.

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  A . With foremarm vertical and forefinfer pointing up ,move hand in small horizonal circles B . With arm ertended downwards and forefinger pointing down,move hand in small horizontal crecles C . Extend arm with fingers closed and thumb pointing upward D . Place both fists in front of the body with the thumbs pointing outward

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• How should you signal the crane operator to dog everyting？______.

  A.Place both fists in front of your body with thumbs pointing toward each other B.Clasp hands in front of your body C.Extend arm with the palm down and hold this position rigidly D.Extend arm with the thumb pointing up, and flex the fingers in and out

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