| 安全生产基本知识 | |
| 1 |
43:20 645 |
| 2 |
50:00 542 |
| 3 |
50:00 553 |
| 4 |
53:20 534 |
| 5 |
26:40 539 |
| 6 |
46:40 462 |
| 7 |
43:20 470 |
| 8 |
43:20 452 |
| 9 |
46:40 461 |
| 10 |
01:06:40 507 |
| 专业相关基础知识 | |
| 11 |
50:00 462 |
| 12 |
43:20 493 |
| 13 |
01:23:20 476 |
| 14 |
38:20 444 |
| 15 |
25:00 539 |
| 16 |
36:40 518 |
| 17 |
60:00 555 |
| 18 |
38:20 635 |
塔式起重机03