Ensure that you document the system and perform a mksysb before performing any maintenance activity.

在执行任何维护任务之前，一定要对系统进行文档记录并执行一个mksysb命令。

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No lift-manufacturing unit shall borrow from other units the qualification certificate of conducting lift manufacturing, installation, renovation or maintenance activity.

电梯生产单位不得向其他单位转借从事电梯制造、安装、改造和维修活动的资质证书。

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On the upstream side, Chevron saw maintenance activity affect both their domestic and international operations.

FORBES: Chevron's Production And Refining Down While Brazil Authorizes Ultra-Deepwater Drilling Again

In the U.S., refinery crude-input volume fell 145, 000 barrels per day to 557 million barrels per day on maintenance activity at its Pascagoula, Mississippi refinery.

FORBES: Chevron's Production And Refining Down While Brazil Authorizes Ultra-Deepwater Drilling Again

In the U.S., Chevron saw net oil equivalent production slide 11, 000 barrels per day to 663 million barrels as a consequence of increased maintenance activity in the Gulf of Mexico.

FORBES: Chevron's Production And Refining Down While Brazil Authorizes Ultra-Deepwater Drilling Again