Repeat the previous two steps as necessary.

A. 前区域空气调节支管减少空气量来分配前空调区域传送的噪声。

B. 前区域配平空气消音器减少输送到前空调区域的空气分配噪声。

C. 前区域调整片的空气套管输送空气到前空调区域，以减弱噪声分布程度。

A. 缠紧卷轴上的发条。

B. 将胶带缠绕在卷筒上。

C. 将胶带粘贴在线圈上。

A. 环境控制系统的这些单元和组件提供了一种加压、加热、冷却、湿度控制、过滤和处理通风区域内用于通风的空气的手段，包括压力密封部分内的区域。

B. 环境控制系统由具有提供座舱增压、加热、冷却、湿度控制、过滤和处理用来在机身密封舱内的通风空气功能的组件和部件构成。

C. 环境控制系统由具有提供座舱增压、加热、冷却、湿度控制、过滤和处理用来在机身密封舱内的循环空气功能的组件和部件构成。

A. In designing schematic diagrams, it may be necessary to combine two aspects: specification necessary to make the diagram clear; And the similarity essential for ease of reading and understanding.

B. In designing schematic diagrams, it may be necessary to comprehend two aspects: detection necessary to make the diagram self-contained; And the simplification essential for ease of reading and understanding.

C. In designing schematic diagrams, it may be necessary to compromise two aspects: detail necessary to make the diagram self-explanatory; And the simplicity essential for ease of reading and understanding.

A. This program is partially important to type B parts.

B. This procedure is of particular importance to type B parts.

C. This procedure is not especially important to type B parts.

A. Those units and components provide for external and internal illumination such as landing lights, taxi lights, position lights, rotating lights, ice lights, cabin warning lights, passenger reading and cabin dome lights, etc.

B. Those units and components provide for external and internal illumination such as landing lights, taxi lights, position lights, rotating lights, ice lights, master warning lights, passenger reading and cabin dome lights, etc.

C. Those units and components provide for external and internal illumination such as landing lights, taxi lights, navigation, position indicating, ice lights, master warning lights, passenger reading and cabin floor lights, etc.

A. Pavement requirements for the exactly aircraft are derived from the static analysis of loads imposed on the main landing gear struts.

B. Pavement requirements for the one aircraft are derived from the static analysis of loads imposed on the main landing gear struts.

C. Pavement requirements for the particular aircraft are derived from the static analysis of loads imposed on the main landing gear struts.

A. This manual contains materials provided for pilots required by Federal Aviation Regulations and added information supplied by manufacturers ,so as to consist of an FAA approved aircraft flight manual.

B. This handbook includes the material required to be furnished to the pilot by the Federal Aviation Regulations and additional information provided by the manufacturer and constitutes the FAA approved airplane flight manual.

C. This manual consists of the material required to be supplied to the pilot by the Federal Aviation Regulations and excessive information provided by the manufacturer and to form the approval of FAA airplane flight manual.

A. Identify the disassembled parts with tags.

B. To notice the removed parts with the lable.

C. To mark the assembled parts with the cards.

A. Before drill the hole, make sure that the point of the drill head is sharp.

B. Prior to drill the hole, make sure that the point of the drill bit is sharp.

C. Before you make the hole, make sure that the point of the drill bit is sharp.