pk

1pk

apk

pkpk

b

1pkpkpk1pk

2pk1oo

35o

c

1pkpkpk

2pk1pk1oo

3

d

6&62;&62;&62;pk;

2

a

a）

b）pk

b

1pkpk

2

351o1

4151

55

611opk

7

c

1pk

2pk1opk

d

6&62;&62;&62;;

3

1pkpk

2pk1o24

1o24

pk

1o24

pk1o24

3pk4471o1pk112oo12oo

4pk123pk

pk411243o12

4

5

2o1o42812:oo2o1o5712:oo

12（:）