u盘

u
0
1
u
0
1
u
0
1
u
0
1
u
0
2
u
0
1
u
0
1
u
0
4
u
0
1
u
0
1
u
0
1
u
0
2
u
0
4
u
0
1
u
0
1
u
0
1
u
0
1
u
0
0
u
0
3