GB 50974-2014 第14.0.12条
| **** | Maintenance records: All maintenance, inspection, testing, and troubleshooting shall be documented in writing, signed by the operator, inspector, and person in charge, and kept on file for reference. |
| **** | Maintenance records: All maintenance, inspection, testing, and troubleshooting shall be documented in writing, signed by the operator, inspector, and person in charge, and kept on file for reference. |
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