ÀöÀöºÜÏëÖªµÀ×Ô¼ºµÄƽ¾ù²½³¤ÊǶàÉÙ£¬Òò´Ë£¬ËýÓÃ×ÔÈ»¾ùÔȵIJ½×Ó×ßÁËÈý´Î50Ã×£¬°ÑÇé¿ö¼Ç¼ÔÚÏÂ±í£¬ÇëÄ㲹ȫÏÂ±í£®
¾àÀë/m ÿ´Î×ߵIJ½Êý ƽ¾ùÿ´Î×ߵIJ½Êý ƽ¾ù²½³¤/m£¨±£ÁôһλСÊý£©
µÚÒ»´Î µÚ¶þ´Î µÚÈý´Î
  70 72 71    
Á¿×ÅÁ¿×Å£¬ÀöÀöÏ뿼ÑéÒ»ÏÂ×Ô¼ºÄ¿²âµÄˮƽ£¬ËýÕ¾ÔÚУÃÅ¿ÚÄ¿²â×Ô¼ºÓëÒ»×ù¹°ÇŵľàÀëԼΪ45Ã×£»½Ó×Å£¬Ëý´ÓУÃÅ¿Ú×ßµ½¹°ÇÅ£¬¹²×ßÁË70²½£»×îºóËýºÍ»ï°éÃÇÓÃÉþ×Ó²âµÃУÃÅ¿Úµ½¹°ÇŵľàÀëΪ49.5Ã×£®
£¨1£©±È½Ïһϣ¬ÀöÀöÄ¿²â¡¢²½²âµÄ½á¹ûÓëÓÃÉþ×Ó²âÁ¿µÄ½á¹û¸÷Ïà²î¶àÉÙ£¿
£¨2£©ÈôÀöÀöʹÓõIJâÉþÖ»ÓÐ18Ã׳¤£¬ÄãÄܲÂһϣ¬ËýºÍ»ï°éÃÇÊÇÈçºÎÓÃÕâ¸ù²âÉþÁ¿³öУÃÅ¿Úµ½¹°ÇŵľàÀëÂð£¿
·ÖÎö£ºÓÃÈý´Î×ßµÄ×ܲ½Êý³ýÒÔ3¼´¿É¼ÆËã³öƽ¾ùÿ´Î×ߵIJ½Êý£»
ÓÃÈý´Î×ß¹ýµÄ×Ü·³Ì³ýÒÔ×Ü´ÎÊý¼´¿É¼ÆËã³öƽ¾ùÿ²½µÄ³¤¶È£»
¾Ý´Ë¼ÆËãÌî±í¼´¿É£»
£¨1£©ÏÈÓò½Êý³Ëƽ¾ùÿ²½µÄ³¤¶È¼ÆËã³ö²½²âµÄ¾àÀ룻Óüõ·¨·Ö±ðÇó³öÿÁ½¸öµÄ²î¼´¿É£»
£¨2£©¿ÉÒÔÏÈÁ¿³ö18Ã׵ľàÀ룬×ö¸ö±ê¼Ç£¬ÒÀ´Î¸ù¾ÝÕâ¸ö·½·¨½Ó×űê¼ÇÏòϲâÁ¿£¬×îºó°Ñ³¤¶ÈÏà¼Ó¼´¿É£®
½â´ð£º½â£º£¨70+72+71£©¡Â3
=213¡Â3
=71£¨²½£©£®
50¡Á3¡Â£¨70+72+71£©
=150¡Â213
¡Ö0.7£¨Ã×£©£»
±í¸ñÈçÏ£º
¾àÀë/m ÿ´Î×ߵIJ½Êý ƽ¾ùÿ´Î×ߵIJ½Êý ƽ¾ù²½³¤/m£¨±£ÁôһλСÊý£©
µÚÒ»´Î µÚ¶þ´Î µÚÈý´Î
  70 72 71  71  0.7
£¨1£©Ä¿²âÓëʵ¼Ê²âÁ¿£º49.5-45=4.5£¨Ã×£©£»
²½²âÓëʵ¼Ê²âÁ¿£º
49.5-0.7¡Á70
=49.5-49
=0.5£¨Ã×£©£®
´ð£ºÀöÀöÄ¿²â¡¢²½²âµÄ½á¹ûÓëÓÃÉþ×Ó²âÁ¿µÄ½á¹û¸÷Ïà²î4.5Ãס¢0.5Ã×£®
£¨2£©ÏȲâÁ¿³ö18Ã׵ľàÀ룬×ö¸ö±ê¼Ç£¬¼ÌÐø²âÁ¿18Ã×£¬ÔÙ×ö¸ö±ê¼Ç£¬½Ó×űê¼Ç¼ÌÐø²âÁ¿£¬¼ÇϵÚÈý´Î²âÁ¿µÄ³¤¶È£¬°ÑÕâÈý´Î²âÁ¿µÄ³¤¶ÈÏà¼Ó¼´¿ÉÇó³ö¾àÀ룮
µãÆÀ£º´ËÌâÖ÷Òª¿¼²éƽ¾ùÊýµÄ¼ÆË㣬¸ù¾Ýƽ¾ùÊý=×ÜÊý¡Â×Ü·ÝÊý¼ÆË㣮
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£ºÐ¡Ñ§Êýѧ À´Ô´£º ÌâÐÍ£º

ÓÐÒ»¸ǫ̈³Æ£¬Ö»ÄܳÆ40ǧ¿ËÒÔÉϵÄÖØÁ¿£¬¼×¡¢ÒÒ¡¢±ûÈý¸öСÅóÓѵÄÌåÖض¼ÔÚ20¡«39ǧ¿ËÖ®¼ä£¬ËûÃǶ¼ÏëÖªµÀ×Ô¼ºµÄÌåÖØ£®ÓÃÕą̂³ÆÔõÑù²ÅÄÜÖªµÀËûÃǸ÷×ÔµÄÌåÖØ£¿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£ºÐ¡Ñ§Êýѧ À´Ô´£º ÌâÐÍ£º

СÃ÷ÏëÖªµÀ×Ô¼ºµÄ²½³¤£¬¾ÍÑØמàÀëÊÇ100Ã×µÄÅܵÀ×ßÁË3´Î£¬·Ö±ðÊÇ124²½¡¢126²½ºÍ125²½£¬Ð¡Ã÷µÄ²½³¤´óÔ¼ÊÇ
0.8
0.8
Ã×£®Ëû²½²âÁËÎÒУÖÐÐÄË®Ä෵ij¤£¬´óÔ¼×ßÁË150²½£¬ÖÐÐÄË®Äà·´óÔ¼³¤
120
120
Ã×£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£ºÐ¡Ñ§Êýѧ À´Ô´£º ÌâÐÍ£º½â´ðÌâ

ÓÐÒ»¸ǫ̈³Æ£¬Ö»ÄܳÆ40ǧ¿ËÒÔÉϵÄÖØÁ¿£¬¼×¡¢ÒÒ¡¢±ûÈý¸öСÅóÓѵÄÌåÖض¼ÔÚ20¡«39ǧ¿ËÖ®¼ä£¬ËûÃǶ¼ÏëÖªµÀ×Ô¼ºµÄÌåÖØ£®ÓÃÕą̂³ÆÔõÑù²ÅÄÜÖªµÀËûÃǸ÷×ÔµÄÌåÖØ£¿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£ºÐ¡Ñ§Êýѧ À´Ô´£º²»Ïê ÌâÐÍ£ºÌî¿ÕÌâ

СÃ÷ÏëÖªµÀ×Ô¼ºµÄ²½³¤£¬¾ÍÑØמàÀëÊÇ100Ã×µÄÅܵÀ×ßÁË3´Î£¬·Ö±ðÊÇ124²½¡¢126²½ºÍ125²½£¬Ð¡Ã÷µÄ²½³¤´óÔ¼ÊÇ______Ã×£®Ëû²½²âÁËÎÒУÖÐÐÄË®Ä෵ij¤£¬´óÔ¼×ßÁË150²½£¬ÖÐÐÄË®Äà·´óÔ¼³¤______Ã×£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸