420.An incorrect connection will cause damage.

A. 飞机在地面上,主起落架和门是主要支撑的部分系统,包括诸如减震柱、转向轴、牵引支柱、门、连杆、连接螺栓等项目。

B. 主齿轮和门是飞机系统的一部分,在地面上提供主要支持。这个系统包括减震柱、转向轴、牵引支柱、门、连杆、连接螺栓等项目。

C. 主架和门是飞机在地面提供系统主要支撑的一部分,包括减震柱、转向轴、牵引支柱、门、连杆、连接螺栓等项目。

D. C.主架和门是飞机在地面提供系统主要支撑的一部分,包括减震柱、转向轴、牵引支柱、门、连杆、连接螺栓等项目。

A. 在提供给客户的所有技术资料中,规则应保持一致。

B. 在提供给客户的所有技术数据中,文化词汇应保持一致。

C. 在提供给客户的所有技术资料中,术语应保持一致。

A. 确保密封剂被完全挤出接触面边缘。

B. 确保沿接触面边缘持续涂抹封严胶。

C. 确保封严胶沿接触面边缘不断挤出。

A. The distribution system is used to store and distribute air pressure.

B. Distribution system is used to induct and distribute air.

C. Air inlet system is used to distribute air to all systems.

A. 这些窗户是机身和乘员舱的窗户,包括挡风玻璃和那些安装在门上的窗户。

B. 窗户是指机身和乘员舱的窗户,包括挡风玻璃和安装在门上的窗户。

C. 窗户指位于机身和驾驶舱的窗户,包括风挡和安装在舱门上的窗户。

A. 对现有分析进行了审查,以确定可能表现出较低安全裕度的部件和区域。

B. 对现有分析进行复核,对部件和区域进行标识,以显示出较低安全裕度。

C. 对于安全裕度较低的部件和区域进行标识并进行了现场分析审查。

A. The condition lever is the primary control for start and stop the engine.

B. The condition lever is the minor control for starting and stopping the engine.

C. The condition lever is the primary control for starting and stopping the engine.

A. When you restore the airplane to its normal condition,make sure the pin is released from the release mechanism.

B. Ensure to remove the pin from the let-go mechanism after you return from the airplane to its common position.

C. When the airplane is in good condition,you must uninstall the pin of the release mechanism.

A. 从安装位置向上提起气瓶。

B. 向上提起做动筒到安装位置。

C. 提起并安装气缸到位。

A. If a word is only understood by a very small number of people in a specific technical area,it will cause interference in communication.

B. If a word is only understood by a very small number of people in a specific technical area,it will cause disturbing in negotiations..

C. If a word is only understood by a very small number of people in a special skill area,it will cause interference in communication.