带切口三棱锥的三视图正确的是<img src="https://file.icve.com.cn/ssykt/612/1019/993FEC45F09DCEE161CBCB1E01C2CC55.png"/>
①
<img src="https://file.icve.com.cn/ssykt/182/242/2D93C9C0D7E7C1DB10E4A19FFB151032.png">
②
<img src="https://file.icve.com.cn/ssykt/806/563/C988CDCABF9549CBA1EF8D59C4196DAD.png">
③
<img src="https://file.icve.com.cn/ssykt/781/281/C344661011811700A3609B4D1742E2F6.png">
④
<img src="https://file.icve.com.cn/ssykt/469/867/757D8D6A89B8454C01577E33C252B1AA.png">