设有仪表着陆系统的跑道,当下滑航道角为3o时,灯具光束仰角是()。

A.<img src='https://img2.soutiyun.com/ask/uploadfile/2709001-2712000/7c723cca883c9e5dd8fa8e66ba0383a5.jpg' /> B.<img src='https://img2.soutiyun.com/ask/uploadfile/2709001-2712000/23968adcda89710acdc23bfb6d4ee7a5.jpg' /> C.<img src='https://img2.soutiyun.com/ask/uploadfile/2709001-2712000/683bfd28f3d0020c935cd36ddd588d8d.jpg' /> D.<img src='https://img2.soutiyun.com/ask/uploadfile/2709001-2712000/91b7f9be04a1c7d3f16fcbfc95df76d4.jpg' /> E.<img src='https://img2.soutiyun.com/ask/uploadfile/2709001-2712000/f2dc8d9dddf1a76221e2831c69204e48.jpg' />

时间:2023-02-04 13:21:41

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