| 安全生产基本知识 | |
| 1 |
43:20 535 |
| 2 |
50:00 462 |
| 3 |
50:00 456 |
| 4 |
53:20 433 |
| 5 |
26:40 446 |
| 6 |
46:40 380 |
| 7 |
43:20 378 |
| 8 |
43:20 364 |
| 9 |
46:40 377 |
| 10 |
01:06:40 407 |
| 专业相关基础知识 | |
| 11 |
50:00 358 |
| 12 |
43:20 397 |
| 13 |
01:23:20 390 |
| 14 |
38:20 366 |
| 15 |
25:00 409 |
| 16 |
36:40 402 |
| 17 |
60:00 419 |
| 18 |
38:20 494 |
塔式起重机03