494、Braking system is used to ＇decrease run-down)time or stop propeller rotation during engine power-off conditions.

829、Complex sentence structure and the large number of meanings and synonyms that many English words have can cause confusion.

828、Calculate the thickness of the shim as follows:t=f x-y s

827、Be careful when you move jet pipes or exhaust cones that have insulating blankets.

826、Basically, writers can use the approved words in the dictionary as core vocabulary.

825、Apply sealant on the outer surface

824、Always keep the brightness control on the LCD display at maximum.

823、All two bracket holes must align with the fuel tube.

822、A small child should use an approved child restraint seat

821、最大着陆重量是着陆触地所批准的最大重量

820、抓住螺丝刀松开卡子