| 安全生产基本知识 | |
| 1 |
43:20 523 |
| 2 |
50:00 487 |
| 3 |
50:00 506 |
| 4 |
53:20 428 |
| 5 |
26:40 458 |
| 6 |
46:40 437 |
| 7 |
43:20 446 |
| 8 |
43:20 449 |
| 9 |
46:40 429 |
| 10 |
01:06:40 549 |
| 11 |
50:00 457 |
| 12 |
50:00 484 |
| 专业相关基础知识 | |
| 13 |
50:00 423 |
| 14 |
43:20 456 |
| 15 |
01:23:20 462 |
| 16 |
38:20 504 |
| 17 |
25:00 656 |
| 18 |
36:40 442 |
| 19 |
60:00 461 |
| 20 |
38:20 565 |
塔式起重机02