A. 婴儿每日需水量150ml/kg,以后每2岁减去20ml/kg B. 婴儿每日需水量150ml/kg,以后每3岁减去20ml/kg C. 婴儿每日需水量150ml/kg,以后每2岁减去25ml/kg D. 婴儿每日需水量150ml/kg,以后每3岁减去25ml/kg E. 婴儿每日需水量150ml/kg,以后每4岁减去30ml/kg