ÌâÄ¿ÄÚÈÝ
¹ûÓ¬µÄ¸ÕëºÍ½ØëÕâ¶ÔÏà¶ÔÐÔ×´ÓÉλÓÚXºÍYȾɫÌåÉϵÄÒ»¶ÔµÈλ»ùÒò£¨BºÍb£©¿ØÖÆ£¬¸Õë¶Ô½ØëΪÏÔÐÔ¡£ÏÖÓлùÒòÐÍ·Ö±ðΪXBXbºÍXbYBµÄ´ÆÓ¬ºÍÐÛÓ¬¸÷Ò»Ö»£¬ËüÃÇÔÓ½»Ëù²úµÄºó´ú±íÏÖΪ
[¡¡¡¡]
A£®´ÆÓ¬ºÍÐÛÓ¬ÖиÕëºÍ½ØëµÄ±ÈÀý¶¼ÊÇ3¡Ã1
B£®´ÆÓ¬ºÍÐÛÓ¬ÖиÕëºÍ½Ø붼ÊǸ÷Õ¼Ò»°ë
C£®ÐÛÓ¬ÖиÕëºÍ½Øë¸÷Õ¼Ò»°ë£¬´ÆӬȫÊǸÕë
D£®´ÆÓ¬ÖиÕëºÍ½Øë¸÷Õ¼Ò»°ë£¬ÐÛӬȫÊǸÕë
´ð°¸£ºD
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿