<img src=https://huaweicloudobs.ahjxjy.cn/5462D128A700C77E01D4EFC5FEB1DD70.png title=3.png alt=3.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/FB9B01BE1390913FE6610145E99CBCBD.png title=3-1.png alt=3-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/C1EBC1F12D5D78D8EDD34105CF37F984.png title=3-2.png alt=3-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/2F584D920E2F0A4FF26CB7BEDE86A286.png title=3-3.png alt=3-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/EDC5AC5A7578669B6B47367A5BA871C7.png title=3-4.png alt=3-4.png/>