12ÔÂ15ÈÕ£¬ºþ±±¾£ÃÅÖÓÏéºÖ¿Ç´óÂëµ°¾»µ°µ½»§4.45Ôª/½ï£¬Ïµ÷0.05Ôª/½ï£¬½»¿É̸£¬»õÔ´Îȶ¨£¬×ß»õÒ»°ã¡£