ܵճϼ㽺ѡ![]() ܵIJճϼҲѡɽӲʱԭҪƷôճϿܵĽˮʲôҪǿԽʲôװ㽺 һճϼҪ 1.̬ճǿճ̻ʱҪճǿ 2.ṩغԻϼϵ¶ȵתӰ콺ˮճ 3.һЧ϶ϲƥ 4.ܷЧҪԸ Ȼ֪ѡճϼҪѡ֮ճӻ ճѡṹ ṹгߵճǿģһƽ˫ݣԿƽ϶̵Ĺ̻ʱ䣩һƽװáſճ
ṹճϿ취 1. ȶԿܵϾòóͷҪճϵIJλȴֻĴóͷ֮ʹϴ媼ϴ 2. ýˮṹճϵҪýˮˮñΪA:B=4:1߰Ϊ3:1 3. ʹ㽺װͿҪճϵճƷճֹˮ 4. ڴ̻ ġʹõ㽺װ 1.㽺 2.㽺ת㽺 3.Բ㽺˫·㽺 塢Ӧʵ 1. ƬͿճ 2. ľкľ㽺ճ 3. ;Ƭ㽺ճ
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