553、The precision of the gauges must agree with the applicable quality standard.

721、Make sure that you turn the control knob counterclockwise

720、 Make sure that you remove all tools and equipment.

719、Make sure that the indication on the gauge agrees with the quantity that is in the tank.

718、 Make sure that the cabin pressure stays constant.

717、lf test result fail, the repair extent should be depended on the troubles

716、 Keep tools away and pick up debris near the engine

715、Keep all the' parts that are serviceable and discard those that are broken.

714、Increase the pressure slowly ( )

713、In the alternative, the acronym CAP may be used

712、If you do not safety the door it is possible that strong winds will cause damage to the structure.
如果你不锁好门,强风可能会对结构造成破坏。