| 安全生产基本知识 | |
| 1 |
50:37 833 |
| 2 |
58:00 550 |
| 3 |
45:43 496 |
| 4 |
45:09 513 |
| 5 |
46:50 486 |
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47:09 442 |
| 7 |
45:06 444 |
| 8 |
47:28 460 |
| 专业相关基础知识 | |
| 9 |
22:33 550 |
| 10 |
34:16 513 |
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34:10 610 |
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36:39 508 |
| 13 |
25:10 393 |
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24:09 390 |
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28:30 400 |
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30:09 380 |
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31:31 924 |
| 18 |
17:34 961 |
| 19 |
37:57 825 |
| 20 |
31:33 788 |
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