¡°á×á¾±±¶·£¬ºá¼ûÉñɽ£»Òý½£ÎªÂ·£¬Ìì°ÔËÄ·½¡£¡±
¡¶É½º£¾¡·ÑÔ:Ïà´«µ±ÄêË®Éñ¹²¹¤ÊÏ£¬ÓëÉϹŲ¿ÂäÁªÃËÊ×Áìò§çïÕùΪµÛ£¬ÔøÓйý¾ªÌ춯µØÒ»Õ½£¬¹²¹¤Å´¥²»ÖÜɽ£¬ÕÛÌìÖù£¬¾øµØÎ¬¡£¹ÊÌìÇãÎ÷±±£¬ÈÕÔÂÐdz½ÒÆÑÉ£»µØ²»Âú¶«ÄÏ£¬¹Ê°Ù´¨Ë®ÁʹéÑÉ¡£
ÔøÓÐéóÊé¼ÇÔØºóÐø:¾´Ë¹²¹¤Å´¥²»ÖÜɽ´óÕ½ºó£¬ÖÂʹ²»ÖÜɽ¶¥·åÖ®ÉÏ£¬Á¢ÓжÏÁÑ֮ʯ¼´ËéΪËİ꣬²»ÖÜɽÓÐÕâÑùÒ»´¦È±¿Ú£¬ÒÑ·ÇÍêÕû֮ɽ¡£ÒòËİêÉñʯÒÅÂäÓÚÈ˼䳾ÊÀÖ®ÖУ¬²»ÖÜɽÉñ¼¸´ÎѰ¶øÎ´¹û£¬ÓÚÊDZ¯·ßÍòǧ£¬ÊÄÓë²»ÖÜɽ¹²Í¬´æÍö£¬ËÄ¿éɽʯһÈÕδ»¹£¬±ã½«×Ô¼º·âÓ¡ÓÚ²»ÖÜɽ¶¥·å£¬ÊÀ´úÊØ»¤²»ÖÜɽȱ¿ÚÖ®´¦¡£
ʱ¼ä²×º££¬ÍòÎïÉ£ÌÈÕתÐÇÒÆ£¬°ÙÔØÖ®Ä꣬ÔÙÎÞÈËÖªÏþ²»ÖÜɽ¾¿¾¹Ôں䦣¬Î¨ÓкýÍ¿ÊÀÈ˽ԶԲ»ÖÜɽËù´«ÑÔµÄÉñÌìʯÒéÂÛ·×·×£¬ÉîÐŲ»ÒÉ¡£
¾Ó¸ßÃíÌã¬Òâͼ׷ÖðÃûÀû£»ÉíÔÚ½ºþ£¬ÊÔͼȰÔÎäÁÖ£»ÈôÔÚѰ³£°ÙÐÕ¼Ò£¬ÆñÓÖ¸ÊԸӹµƽ·²£¿ÖÕÊÇÎÞÒ»´¦ÀýÍâ¡£ÈËÉú°ÙÔØ£¬¶¯µ´¾ÅÊ®¾Å£¬ÆäÓàºÎÄܵð²Äþ¡£¾ºÏà×·Öð±¼²¨Ò»³¡£¬µ½Í·À´Ê±£¬½ðÒøÈ¨Á¦½Ô³É¿Õ£¡
Ш×Ó(1/2),µã»÷ÏÂÒ»Ò³¼ÌÐøÔĶÁ