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| 维修服务 | |||
| 预防设施【核】; 防护设备 | |||
| 预防性检修 | |||
| 预防性维护; 预防保养; 防护设施; 定期维护 | |||
| профилактическое обслуживание: 4 phrases in 4 subjects |
| Computer networks | 1 |
| Electronics | 1 |
| General | 1 |
| Technology | 1 |
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