亚洲激情+欧美激情,无码任你躁久久久久久,我的极品美女老婆,性欧美牲交在线视频,亚洲av高清在线一区二区三区

電子課本網 第52頁

第52頁

信息發(fā)布者:
?$2 \div 3=\frac {2}{3}$?,?$ 3 \div 5=\frac {3}{5}$?
?$\frac {2}{3}=\frac {10}{15}$?,?$ \frac {3}{5}=\frac {9}{15}$?
?$\frac {2}{3}>\frac {3}{5}$?
?$3 \div 4=\frac {3}{4}$?,?$ 5 \div 8=\frac {5}{8}$?
?$\frac {3}{4}=\frac {6}{8}$?
?$\frac {3}{4}>\frac {5}{8}$?
?$7 \div 6=\frac {7}{6}$?,?$ 6 \div 5=\frac {6}{5}$?
?$\frac {7}{6}=\frac {35}{30}$?,?$ \frac {6}{5}=\frac {36}{30}$?
?$\frac {6}{5}>\frac {7}{6}$?
=
?$\frac {3}{4}=\frac {30}{40}$?,?$ \frac {4}{5}=\frac {32}{40}$?,?$ \frac {5}{8}=\frac {25}{40}$?
?$\frac {4}{5}>\frac {3}{4}>\frac {5}{8}$?
?$\frac {1}{3}=\frac {5}{15}$?,?$ \frac {2}{5}=\frac {6}{15}$?
?$\frac {1}{3}<\frac {2}{5}$?
答:第一臺收割機工作效率高一些。