文档预览： kkkkk 2 u uuuu (:) 1 2 3 4 5 6 GY361Ck_Ch02_061211(2) 11/12/2006, 16:1434 35 2u uuuu (^^^^^) wu uuuu 6.9 ***** 123 = 848.7 123 ÷÷÷÷÷ 3.2 = 38.... 点击下载