A.夹肘换气.分手抬头抱水.低头送臂.滑行吐气B.夹肘换气水.分手抬头抱水.滑行吐气.低头送臂C.分手抬头抱水.夹肘换气.低头送臂.滑行吐气D.分手抬头抱水.低头送臂.夹肘换气.滑行吐气