<img src=https://huaweicloudobs.ahjxjy.cn/8857D84DC5DAFFFE5F70987EB5881C19.png title=8.png alt=8.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/14E28F0312C54C23B35AF4FA03B8820C.png title=8-1.png alt=8-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/FE9F0EC3C734610B7933191676683CD9.png title=8-2.png alt=8-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/727EDE104F8D02A8C878D46C0264E36B.png title=8-3.png alt=8-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/7849CC3FE183A9922C8F01A5F48B8C79.png title=8-4.png alt=8-4.png/>