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| 无效水平; 非毒力作用水平 | |||
| 安全水平; 安全级 | |||
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безопасный уровень : 15 phrases in 7 subjects |
| Ecology | 1 |
| Electronics | 1 |
| Food service and catering | 2 |
| General | 5 |
| Lasers | 2 |
| Technology | 3 |
| United Nations | 1 |
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