A

B1

B2

B3

B4

WI

B1

1

3

5

1/4

0.24

B2

1/3

1

3

1/5

0.12

B3

1/5

1/3

1

1/7

0.06

B4

4

5

7

1

0.59

检验 λmax = 4.118041,CI = 0.076014,CR = 0.08446