| 安全生产基本知识 | |
| 1 |
43:20 502 |
| 2 |
50:00 471 |
| 3 |
50:00 495 |
| 4 |
53:20 450 |
| 5 |
26:40 498 |
| 6 |
46:40 447 |
| 7 |
43:20 433 |
| 8 |
43:20 436 |
| 9 |
46:40 426 |
| 10 |
01:06:40 475 |
| 11 |
50:00 444 |
| 12 |
50:00 440 |
| 专业相关基础知识 | |
| 13 |
50:00 570 |
| 14 |
60:00 447 |
| 15 |
33:20 532 |
| 16 |
16:40 431 |
| 17 |
48:20 514 |
| 18 |
48:20 507 |
| 19 |
48:20 466 |
| 20 |
38:20 438 |
| 21 |
36:40 481 |
施工升降机02