0

1

2

3

4

5

6

7

8

0

0

4

6

7.5

9

20

10

16

8

1

4

0

6.5

4

10

5

7.5

11

10

2

6

6.5

0

7.5

10

10

7.5

7.5

7.5

3

7.5

4

7.5

0

10

5

9

9

15

4

9

10

10

10

0

10

7.5

7.5

10

5

20

5

10

5

10

0

7

9

7.5

6

10

7.5

7.5

9

7.5

7

0

7

10

7

16

11

7.5

9

7.5

9

7

0

10

8

8

10

7.5

15

10

7.5

10

10

0

需求量/t

0

1

2

1

2

1

4

2

2