A、 The aircraft navigation systems provide the flight which is required by the crew,and meet the the most appropriate safety requirements.
B、 The aircraft navigation systems provide the crew with the data required for flight within the most provisional safety requirements.
C、 The aircraft navigation systems provide the crew with the data required for flight within the most appropriate safety requirements.
答案：C
A、 The aircraft navigation systems provide the flight which is required by the crew,and meet the the most appropriate safety requirements.
B、 The aircraft navigation systems provide the crew with the data required for flight within the most provisional safety requirements.
C、 The aircraft navigation systems provide the crew with the data required for flight within the most appropriate safety requirements.
答案：C
A. If you want to use the STE specification properly, a high professional standard is required.
B. A high level of professionalism requires the correct use of STE specifications.
C. In order to use the STE specifications appropriately, high professionalism is needed.
A. Ground Control depicts minimum diameter of turning for taxiing and ground operation.
B. Ground Control describes minimum radius of turn for taxiing and ground handling.
C. The least radius of turn for taxiing and ground maneuver is described in Ground Control.
A. APU start attempts are inhibited above 25,000 feet with both busses off, only one start attempt is allowed below 25000 feet.
B. With both busses power off, APU start attempts is recommended above 25000 feet and only one start could be accepted below 25,000 feet.
C. APU start attempts are not recommended above 25,000 feet. With both busses off, only one start attempt is recommended below 25,000 feet.
A. 字母数字索引的主题应包含在简介中，作为定位所需电路的辅助手段。
B. 简介中应包含按主题排列的字母索引，以帮助定位所需的电路。
C. 简介中应包含数字索引的主题，以帮助确定所需的电路。
A. 压力波动和震动会导致软管磨损。
B. 压力堵塞和摆动可以造成软管老化。
C. 压力骤然上升和晃动会使软管分层。
A. Magnetic tools have an unwanted effect on the compass system.
B. Metallic tools are of positive effect on the compass system.
C. Magnets can affect the compass system adversely.
A. Programs shall be written in order of the reference number of each chapter and own proper primary and secondary theme headings. It is not necessary to begin a program from the ceiling of a new page.
B. Procedures shall be sorted in priority order of the reference number in each chapter. They have appropriate main and subordinate topic headings and the beginning do not need to exceed the top of a new page.
C. Procedures shall be prepared in reference number sequence within each chapter with proper major and minor subject heads, without the necessity of each procedure starting at the top of a new page.
A. 描述飞机静压系统时，应阐述加热和通风系统的影响以及开窗对备用静压系统的影响。
B. 描述飞机静力系统时，应阐述加热和通气系统以及开窗对备用静力系统的影响。
C. 描述飞机静压系统时，应阐述加热和排气系统以及开窗对替代静压系统的影响。
A. 组件延伸至壳体，安装并连接在通信控制组件上。
B. 组件延伸至壳体组件，并与伸缩控制组件相连。
C. 组件延伸至壳体组件，并与通讯控制组件相连。
A. 如果你发现了凹坑，做适用的维护程序。
B. 如果你发现了划痕，做具体的修理工作。
C. 如果你发现了裂纹，做适用的修理程序。
