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涓€涓?嚑浣曚綋鏄?粠楂樹负4m,搴曢潰鍗婂緞涓?cm鐨勫渾鏌变腑鎸栨帀涓€涓?渾閿ュ悗寰楀埌鐨?鍦嗛敟鐨勫簳闈㈠氨鏄 鍒濅簩鍕捐偂瀹氱悊鎶樺彔棰楛br/>濡傚浘,闀挎柟褰?BCD涓?AB=4,BC=3,灏嗗叾娌跨洿绾縈N鎶樺彔, 鎬庝箞鍋氬叧浜庤酱瀵圭О鍙樻崲杩欓亾棰楛br/>濡傚浘,C銆丏銆丒銆丗鏄?竴涓?暱鏂瑰舰鍙扮悆妗岀殑4涓?《鐐?A銆丅 洪浜小学高年级与中年级学生人数的比是7：4,中年级学生人数的百分之七十五再加上54人就与低年级人数同样多,高年级学生人数 1/4,-3/4,-3/4,1/4,17/4,( ) (（1^4+1/4)(3^4+1/4)(5^4+1/4).(19^4+1/4))/((2^4+1/4)(4^4+1/4) 4-1 4 4 4 4 4=0 4 4 4 4 4=1 4 4 4 4 4=2 4 4 4 4 4=3 4 4 4 4 4=4 （1^4/4)(3^4+1/4)...(19^4+1\4) \ (2^4+1/4)(2^4+1/4)(4^4+1/4). 4 4 4 4=1 4 4 4 4=2 4 4 4 4=3 填标点符号 (1^4+1/4)*(3^4+1/4)*.(19^4+1/4)/(2^4+1/4)*(4^4+1/4).(20^4+1/ 求[(1^4+1/4)(3^4+1/4)(5^4+1/4)……(19^4+1/4)]/[(2^4+1/4)(4^4+1/