In a high concentration, this material is poisonous.

A. The manufacturer may establish procedures to provide drawback on unairworthy conditions.

B. The manufacturer may establish procedures to provide response on unairworthy conditions.

C. The manufacturer may establish procedures to provide recall on unairworthy conditions.

A. Procedures shall be provided for all airplanes for all cases of engine failure, including partial failure, during takeoff and in flight.

B. Procedures shall be provided for all airplanes for all cases of engine failure, including intermittent failure, during roll out and in flight.

C. Procedures shall be provided for all airplanes for all cases of engine flame out, including parts failure, during takeoff and in flight.

A. The pitot tube is on the external forward part of the airplane.

B. You may find the pitot probe on the front internal side of the fuselage.

C. The pitot probes are located on the forward external part of the airplane.

A. Use only the approved forms of verbs and adjectives.

B. Use only the permitted forms of verbs and adverbs.

C. Use only the applicable forms of adverbs and adjectives.

A. A lab analysis of the contamination is required to the frequently clogged filters.

B. When you find the filters blocked in a very short time, ask the vendor to inspect them for any contamination.

C. If the filters get clogged at an unusually early stage, send them to the laboratory to analyze the contamination.

A. Make sure the wire in this position is able to unlock the parts.

B. The wire must be positioned so that the parts can oscillate freely.

C. Ensure the wire is positioned to create a locking motion on parts.

A. 调整倾斜仪，直到气泡在中心。

B. 校准倾斜仪，直到旋钮在中心。

C. 调整倾斜仪，确认气泡在中心。

A. 描述飞机发动机时，应描述进气系统包括： 1.空气流动路径 2.保护结冰 3.筛选 4.增压/涡轮增压 5.限制、警告、提示

B. 描述飞机发动机时，应描述有关进气系统的以下信息： 1.气路 2.防冰 3.过滤器 4.增压/涡轮增压 5.限制、警告、提示

C. 描述飞机发动机时，应描述吸气系统包括： 1.空气流动路径 2.防冰 3.过滤 4.增压/涡轮增压 5.限制、警告、提示

A. To know what you want to say and to use the words that give the wanted meaning shall always be assured.

B. In order to express the meaning that you want, always make sure that you know what you want to say and you use the words.

C. Always make sure that you use what you want to say to express the words with the meaning that you want.

A. 检验/查找部分应提供访问和检验或查找系统、单元或区域所需的信息和程序。

B. 检验/检查部分应提供接近和检验或检查系统、装置或区域所需的信息和程序。

C. 监控/检查部分应提供访问和监控或检查系统、装置或区域所需的信息和程序。