当燃油油面低于活门时，通风导管内的排放浮子活门和通风通道使通风系统内的燃油排放到油箱。

这个制度并不取代CAP没有包括的正常沟通渠道。

A. This system does not include the usual channels of communication available to CAP.

B. This system does not supersede the normal channels of communication for items not covered by the CAP.

C. The usual channels of communication in this system cannot be replaced by the introduction of CAP.

向化合物中加入5毫升硬化剂。

A. Add 5 ml of hardener to the compound.

B. Add 5 ml of adhesive to the compound.

C. Put 5 ml of hardener to the component.

你可以用技术动词的过去分词作形容词。

A. You can use the past form of technical verbs as adjectives.

B. You can use the past tense form of technical verbs as adverbs.

C. You can use the past participle of technical verbs as adjectives.

The elapsed time resets to 0 when the button is held down for two seconds.

A. The counted time resets to 0 when the button is kept down for two seconds.

B. The total time resets to 0 when the button is held on for two seconds.

C. The remained time resets to 0 when the button is seen down for two seconds.

The cooled air from the air cycle machine can no longer hold the quantity of water it could when it was warm. A water separator is used to remove the water from the saturated air before it is sent to the aircraft cabin. Foggy air from the ACM condenses and coalesces the mist into larger water drops in the water separator. The water collects on the sides of the separator and drains down and out of the unit, while the dry air passes through.

A. 从空气循环机出来的冷却空气与其没被冷却时比不再能承载那么多的水。水分离器被用来把水从饱和的空气中除掉，然后空气再进入座舱。来自于空气循环机的水雾装的空气在水分离器中凝结成大水滴。水在水分离器中越来越多然后排出空气循环机，而干燥的空气继续向后流。

B. 从空气循环机出来的冷却空气与其没被冷却时比不再能承载那么多的水。水分离器被用来把水从饱和的空气中除掉，然后空气再进入座舱。来自于空气循环机的水雾装的空气在水分离器中凝结成大水滴。水在水分离器中越来越多然后排出水分离器机，而干燥的空气继续向后流。

C. 从空气循环机出来的冷却空气与其没被冷却时比不再能承载那么多的水。水分离器被用来把水从湿润的空气中除掉，然后空气再进入座舱。来自于空气循环机的水雾装的空气在水分离器中凝结成大水滴。水在水分离器中越来越多然后排出空气循环机，而干燥的空气继续向后流。

The portion of the system is used to indicate the quantity, temperature and pressure of the hydraulic fluid, including items such as transmitters, indicators, warning systems, etc.

A. 系统的这个部分用来显示数量、温度和液压油的压力，包括的项目有传输机、指示器和告警系统等。

B. 用来显示液压油的质量，温度和压力的系统部分，包括转换器、指示器和告警系统等元件。

C. 系统中用来指示液压油的油量、温度和压力的部分，包括传感器、指示器和告警系统等组件。

There are three classes of structure: primary, secondary and tertiary.

A. 结构类别分为三类：主要的、次要的、备用的。

B. 结构类别分为三类：主要的、次要的、必需的。

C. 结构类别分为三类：主要的、次要的、第三位的。

Attach the ropes on the ground with the mooring points.

A. 在地面上的停放点贴上胶带。

B. 在地面上通过系留点贴上警示带。

C. 将绳索通过系留点连接到地面。

The dimensions are given in the table.

A. 表中给出了尺寸。

B. 表在桌子上。

C. 尺寸在图中显示。

Do not disassemble or repair igniter plugs.

A. 不要组装或修理点火嘴。

B. 不要拆解或修理点火嘴。

C. 不要组装或更换点火嘴。