| 安全生产基本知识 | |
| 1 |
47:30 582 |
| 2 |
01:33:50 457 |
| 3 |
01:09:35 461 |
| 4 |
01:10:00 441 |
| 专业相关基础知识 | |
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01:40:00 389 |
| 6 |
02:50:00 408 |
| 7 |
01:49:00 406 |
| 8 |
01:15:00 375 |
| 9 |
25:00 365 |
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51:00 415 |
塔式起重机01