<img src=https://huaweicloudobs.ahjxjy.cn/5F2C743DC46CDCDA93B776A820CB8E3B.png title=3.png alt=3.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/51439F2090BF00DC24437CD20CFFA8CF.png title=3-1.png alt=3-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/E57CC6F1A654B883AA62485D5889EA0A.png title=3-2.png alt=3-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/9D33053A9B8D2DC52E2706604CF0A0BD.png title=3-3.png alt=3-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/6E1E4F17794B1B4963ADD75D143A044E.png title=3-4.png alt=3-4.png/>