比的认识
A.3:1 | B.3.14:1 |
C.![]() |
A.3:2 | B.5:3 | C.7:4 |
A.![]() |
B.![]() |
C.![]() |
D.![]() |
1 |
12 |
3 |
4 |
4 |
5 |
甲、乙、丙三人步行24米,三人所需时间分别为24秒,12秒,10秒,则三人步行的速度之比为( )
A.5:10:12 | B.10:5:12 | C.12:5:10 |
A.5:30 | B.1:6 | C.1:7 |
5 |
8 |
A.2:1:1 | B.1:2:2 | C.2:2:1 |
A.2:5 | B.1:2 | C.2:10 | D.3:7 |