7/21/2019 creat

http://slidepdf.com/reader/full/creat-56d99b8d4407a 1/4

7/21/2019 creat

http://slidepdf.com/reader/full/creat-56d99b8d4407a 2/4

7/21/2019 creat

http://slidepdf.com/reader/full/creat-56d99b8d4407a 3/4

7/21/2019 creat

http://slidepdf.com/reader/full/creat-56d99b8d4407a 4/4