577、The system must be deactivated in order 'to prevent the thrust reverser from operating accidentally.

697、 Complex sentence structure and the large number of meanings and synonyms that many English
words have can cause confusion 复杂的句子结构以及许多英语单词的大量含义和同义词会造成混淆

696、 Calculate the thickness of the shim as follows、 t= x-y. 计算垫片厚度、t= x-y

695、 Be careful when you move jet pipes or exhaust cones that have insulating blankets.
当你移动有绝缘毯子的喷射管或排气锥时要小心。

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

693、Apply sealant on the outer surface

692、 Always keep the brightness control on the LCD display at maximum

691、All three bracket holes must align with the fuel tube.

690、A small child should use an approved child restraint seat 幼儿应使用经批准的儿童安全座椅

689、最大着陆重量是着陆触地所批准的最大重量

688、抓住螺丝刀松开卡子