1409. Engage the gear wheel to the spider shaft

A. 安装指示器时将其向后方倾斜。

B. 为了安装指示器,应将其向后移动。

C. 安装指示器时将其向前移动。

A. The typical modern two-piece aircraft wheel is cast or forged from aluminum or titanium alloy;

B. The typical modern two-piece aircraft wheel is cast or forged from aluminum or magnesium alloy;

C. The critical modern two-piece aircraft wheel is cast or forged from composite or magnesium alloy;

A. Groups of words are hyphenated if they are not usually adjectives but serve as an adjective together before a noun.

B. Groups of words are not usually adjectives. But these groups of words function together as a noun before an adjective are hyphenated.

C. Groups of words are not usually adjectives but function together as an adjective before a noun. These groups of words are hyphenated.

A. 通过闭合辅助电源断路器或者外接电源接触器,也能把APU发电机或外电源车的输出电源连接到交流汇流条上。

B. 通过闭合交流电源断路器或者外接电源接触器,也能把APU发电机和外电源车的输出电源连接到交流汇流条上。

C. 通过闭合辅助电源断路器或者外接电源接触器,也能把APU发电机和外电源车的输出电源连接到交流汇流条上。

A. Aluminum alloy is light and strong, so that it is widely used in aircraft manufacturing industry.

B. Aluminum alloy is light and strong, so that it is seldom used in aircraft manufacturing industry.

C. Aluminum alloy is light and strong, so that it is widely used in aircraft maintenance industry.

A. 简体技术英语(STE)有一个可操纵的通用手册(第2部分),为你提供了在技术员写作中最常用的单词。

B. 简化技术英语(STE)有一个受控的通用词典(第2部分),它提供了在技术文件中最常用的词汇。

C. 简体技术英语(STE)有一个操纵专用词典(第2部分)和为你提供了在技术操纵写作中最常用的单词。

A. Outside Air Temperature is the free air static temperature, obtained either from inflight temperature indications or ground meteorological sources, a adjusted for instrument error and compressibility effects.

B. Outdoor Air Temperature is the dynamic temperature of free air, obtained from flight temperature indications or ground meteorological sources and adjusted for instrumental error and compressibility effects.

C. Outdoor Air Temperature is free air stagnation temperature, from fight temperature indicating or ground meteorological resource, and according to the instrument error and compressibility effects to adjust.

A. An in-line flow indicator is embodied in other configurations. If there is oxygen, the color of the indicator becomes green.

B. The oxygen is dyed green in other configurations that include an in-line flow indicator.

C. The present oxygen indicator comes on green due to an in-line flow in the other configurations.

A. 用一块布沿钢索摩擦,以发现损伤。

B. 要找出电线上的损伤,用一块布在上面擦一擦。

C. 用布擦干净导线以发现损伤。

A. 当启动发动机之前,解除离合器。

B. 当启动发动机之前,先断开刹车。

C. 当启动发动机之前,解除推力器。