1681. 将活门设置到完全关闭位

set the valve to fully closed position

set the valve to full closed position

set the valve to fully close position

正确答案：A

设备系统操作理论翻译

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1682. 增压的一个关键因素,是机身承受结构内部压力,与外部环境压力增加所产生的力的能力。

1681. 将活门设置到完全关闭位

1680. 机油温度对机油油位指示器的精度有影响。

1679. Remove oil and grease with a degreasing agent

1678. Put the aircraft back to its initial configuration

1677. Make sure that all the lights on the front of the CMU do not come on

1676. Make sure that the cabin pressure stays constant

1675. 确保新地板面板的构型和尺寸与已拆下的相同

1674. Acetone is a heavy-duty degreaser suitable for metal preparation and removing grease from fabric covering prior to doping

1673. The information to be included on the cover will be left to the manufacturer＇s discretion