ÌâÄ¿ÄÚÈÝ
ÃܱÕÈÝÆ÷ÄÚÓÐa¡¢b¡¢c¡¢dËÄÖÖÎïÖÊ£¬ÔÚÒ»¶¨Ìõ¼þϳä·Ö·´Ó¦£¬²âµÃ·´Ó¦Ç°ºó¸÷ÎïÖʵÄÖÊÁ¿Èç±íËùʾ
ÏÂÁÐ˵·¨²»ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
ÎïÖÊ | a | b | c | d |
·´Ó¦Ç°ÖÊÁ¿ | 6.40 | 3.20 | 4.00 | 0.50 |
·´Ó¦ºóÖÊÁ¿ | x | 2.56 | 7.20 | 0.50 |
A£®d¿ÉÄÜÊÇ´ß»¯¼Á |
B£®±íÖÐxΪ4.64 |
C£®cÖÐÔªËصÄÖÖÀàµÈÓÚa¡¢bÁ½ÖÖÎïÖÊÖÐÔªËصÄÖÖÀàÖ®ºÍ |
D£®ÈôaÓëbµÄÏà¶Ô·Ö×ÓÖÊÁ¿Ö®±ÈΪ2£º1£¬Ôò·´Ó¦ÖÐaÓëbµÄ»¯Ñ§¼ÆÁ¿ÊýÖ®±ÈΪ2£º1 |
ÓÉÖÊÁ¿Êغ㶨Âɼ°±í¸ñÐÅÏ¢¿ÉÖª£¬·´Ó¦ºóbÖÊÁ¿¼õÉÙÁË3.20g-2.56g=0.64¿Ë£¬ÊÇ·´Ó¦ÎcÖÊÁ¿Ôö¼ÓÁË7.20g-4.00g=3.2¿Ë£¬ÊÇÉú³ÉÎdµÄÖÊÁ¿²»±ä£¬¿ÉÄÜÊÇ´ß»¯¼Á£®ÓÉÖÊÁ¿Êغ㶨ÂÉ¿ÉÖª£¬aÊÇ·´Ó¦Î²Î¼ÓµÄÖÊÁ¿Îª£º£¨3.2g-0.64g£©=2.56g£®
A¡¢ÓÉdµÄÖÊÁ¿²»±ä£¬ËùÒÔd¿ÉÄÜÊÇ´ß»¯¼Á£¬¹ÊAÕýÈ·£»
B¡¢±íÖÐxΪ£º6.40g-2.56g=3.84g£¬¹ÊB´íÎó£»
C¡¢ÓÉÒÔÉÏ·ÖÎö¿ÉÖª£¬a¡¢b·´Ó¦Éú³ÉÁËc£¬ËùÒÔ£¬cÖÐÔªËصÄÖÖÀàµÈÓÚa¡¢bÁ½ÖÖÎïÖÊÖÐÔªËصÄÖÖÀàÖ®ºÍ£¬¹ÊCÕýÈ·£»
D¡¢ÓÉÒÔÉÏ·ÖÎö¿ÉÖª£¬a¡¢bµÄÖÊÁ¿±ÈΪ£º2.56g£º0.64g=4£º1£¬ÈôaÓëbµÄÏà¶Ô·Ö×ÓÖÊÁ¿Ö®±ÈΪ2£º1£¬Ôò·´Ó¦ÖÐaÓëbµÄ»¯Ñ§¼ÆÁ¿ÊýÖ®±ÈΪ2£º1£¬¹ÊDÕýÈ·£®
¹ÊÑ¡B£®
A¡¢ÓÉdµÄÖÊÁ¿²»±ä£¬ËùÒÔd¿ÉÄÜÊÇ´ß»¯¼Á£¬¹ÊAÕýÈ·£»
B¡¢±íÖÐxΪ£º6.40g-2.56g=3.84g£¬¹ÊB´íÎó£»
C¡¢ÓÉÒÔÉÏ·ÖÎö¿ÉÖª£¬a¡¢b·´Ó¦Éú³ÉÁËc£¬ËùÒÔ£¬cÖÐÔªËصÄÖÖÀàµÈÓÚa¡¢bÁ½ÖÖÎïÖÊÖÐÔªËصÄÖÖÀàÖ®ºÍ£¬¹ÊCÕýÈ·£»
D¡¢ÓÉÒÔÉÏ·ÖÎö¿ÉÖª£¬a¡¢bµÄÖÊÁ¿±ÈΪ£º2.56g£º0.64g=4£º1£¬ÈôaÓëbµÄÏà¶Ô·Ö×ÓÖÊÁ¿Ö®±ÈΪ2£º1£¬Ôò·´Ó¦ÖÐaÓëbµÄ»¯Ñ§¼ÆÁ¿ÊýÖ®±ÈΪ2£º1£¬¹ÊDÕýÈ·£®
¹ÊÑ¡B£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿