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PPT播放时黑屏、暂停、标注技巧

  • 2026-10-24 00:28:07
PPT播放时黑屏、暂停、标注技巧

演讲时想暂停、标注、黑屏？怎么办？

B键黑屏，W键白屏

Ctrl+鼠标左键标注

演讲更专业，懒人也能控场。
关注【懒人办公指南】，汇报展示更从容。

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【PPT】发热(症状学)-2版

基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-11-06 12:05:41 HTTP/1.1 GET : http://h.sjds.net/a/508477.html
  2. 运行时间 : 0.078256s [ 吞吐率：12.78req/s ] 内存消耗：4,342.09kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=0ba5d56b391c0452740aa3131f98c654
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  1. CONNECT:[ UseTime:0.000738s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000879s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000524s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000388s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000702s ]
  6. SELECT * FROM `set` [ RunTime:0.000344s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000785s ]
  8. SELECT * FROM `article` WHERE `id` = 508477 LIMIT 1 [ RunTime:0.000465s ]
  9. UPDATE `article` SET `lasttime` = 1793937941 WHERE `id` = 508477 [ RunTime:0.001354s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000407s ]
  11. SELECT * FROM `article` WHERE `id` < 508477 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000560s ]
  12. SELECT * FROM `article` WHERE `id` > 508477 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000473s ]
  13. SELECT * FROM `article` WHERE `id` < 508477 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000617s ]
  14. SELECT * FROM `article` WHERE `id` < 508477 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000706s ]
  15. SELECT * FROM `article` WHERE `id` < 508477 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000675s ]
0.088343s