ÌâÄ¿ÄÚÈÝ
19¡¢¼×ÐÍH1N1Á÷¸ÐÊÇÒ»ÖÖ¼±ÐÔºôÎüµÀ´«È¾²¡£¬Æ䲡ÔÌåÊÇÒ»ÖÖÐÂÐ͵ļ×ÐÍH1N1Á÷¸Ð²¡¶¾£¬2009ÄêÇﶬ¼¾½ÚÔÚÈËȺÖйãΪ´«²¥£®Ä³Ò©µê¾ÓªÒ»ÖÖ¿¹²¡¶¾Ò©Æ·£¬¶Ô¸Ã²¡¶¾ÓÐÒ»¶¨µÄ·À·¶ÓëµÖ¿¹×÷Óã¬ÔÚÊг¡½ôȱµÄÇé¿öϸÃÒ©µê¶Ô¸Ã¿¹²¡¶¾Ò©Æ·Ìá¼Û100%£¬µ«Ëæºó±ãÔâµ½Îï¼Û²¿ÃŵÄÑÏËà´¦Àí£¬²¢Ã÷È·ÏÞ¶¨ÆäÌá¼ÛµÄ·ù¶ÈÖ»ÄÜÊÇÔ¼ÛµÄ10%²ÅÄܳöÊÛ£¬Çó¸ÃÒ©Æ·ÏÖÔÚÐèÒª½µ¼Û°Ù·ÖÖ®¼¸²ÅÄÜÏúÊÛ£¿
·ÖÎö£ºÉè¸ÃÒ©Æ·Ô¼ÛΪaÔª£¬½µ¼Û°Ù·Ö±ÈΪx£®
µÈÁ¿¹Øϵ£ºÏÖÔÚµÄÊÛ¼ÛµÈÓÚÔ¼Û¡Á£¨1+10%£©£®ÏÖÔÚµÄÊÛ¼Û¼´ÎªÔ¼Û¡Á£¨1+100%£©£¨1-x£©£®
µÈÁ¿¹Øϵ£ºÏÖÔÚµÄÊÛ¼ÛµÈÓÚÔ¼Û¡Á£¨1+10%£©£®ÏÖÔÚµÄÊÛ¼Û¼´ÎªÔ¼Û¡Á£¨1+100%£©£¨1-x£©£®
½â´ð£º½â£ºÉè¸ÃÒ©Æ·Ô¼ÛΪaÔª£¬½µ¼Û°Ù·Ö±ÈΪx£®
a£¨1+100%£©£¨1-x£©=a£¨1+10%£©£¬
½âµÃ£ºx=0.45£®
´ð£ºÐèÒª½µ¼Û45%²ÅÄÜÏúÊÛ£®
a£¨1+100%£©£¨1-x£©=a£¨1+10%£©£¬
½âµÃ£ºx=0.45£®
´ð£ºÐèÒª½µ¼Û45%²ÅÄÜÏúÊÛ£®
µãÆÀ£º½âÌâ¹Ø¼üÊÇÒª¶Á¶®ÌâÄ¿µÄÒâ˼£¬¸ù¾ÝÌâÄ¿¸ø³öµÄÌõ¼þ£¬ÕÒ³öºÏÊʵĵÈÁ¿¹ØϵÁгö·½³Ì£¬ÔÙÇó½â£®
´ËÌâÖеÄÔ¼ÛÊÇÒ»¸ö¸¨Öúδ֪Êý£®
´ËÌâÖеÄÔ¼ÛÊÇÒ»¸ö¸¨Öúδ֪Êý£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿