203. In dictionary the approved adjectives are given in their basic form, with their comparative and superlative forms in parentheses where applicable

A. Fuel leaks can decrease engine performance.

B. A fuel leak can cause the engine to operate badly.

C. Fuel leakage may be lower engine performance.

A. 在飞行舱的控制允许选择温度和流速。

B. 驾驶舱的控制允许选择温度和流动方向。

C. 驾驶舱的控制允许选择温度和流速。

A. 删除某些规则并将其概念包含在其他规则中。

B. 删除某些规则,并将其细则包含在其他规则中。

C. 删除某些尺寸,并将其概念包含在其他尺寸中。

A. Do not replace the battery. Only an approved service provider can replace it.

B. The battery is not user-replaceable; it can only be replaced by an approved service provider.

C. Do not replace a battery without the approval from the service provider.

A. The job is required to be divided into logical steps or operations.

B. This needs to break the work and distribute the logical steps or operations.

C. This requires to destroy the job logically into steps or operations.

A. This commonality requires greater learning and understanding for pilots, aircraft maintenance technicians and engineers alike.

B. This commonality makes it easier for pilots, aircraft maintenance technicians and engineers alike to learn and understand.

C. This commonality brings about better learning and understanding of the pilots, aircraft maintenance technicians and engineers alike

A. A brush is cleaned by the filter element.

B. The filter element and a brush are clean.

C. Use a brush to clean the filter element.

A. The bolt will be at the 2 o＇ clock position when you look at the pump from the rear.

B. The rivet is installed on the 2 o＇clock position of the pump when looking from rear to front.

C. Look at the bolt installed on the pump from rear to front at the 2 o＇clock position.

A. 在最后运转发动机20分钟。

B. 在地面运转发动机20分钟。

C. 发动机慢车运转20分钟。

A. 这些词汇对于该领域外的人很难理解。

B. 这些词汇对于该专业领域外的人很难理解。

C. 这些词汇难于理解,尤其对于该领域外的人。