642. 12A,14C和17AD座位的旅客阅读灯不亮。

A. 安装排放活门和正确的封严。

B. 安装排放活门和正确的垫圈。

C. 安装排放活门和正确的卡箍。

A. This procedure gives you the disassembly process.

B. You can find the procedures for disassembling in this section.

C. The assembly process can be found in this section.

A. Set a point at the fire temperature the gas grows larger to close the FIRE pressure switch in the detector. This influences the resistance longer.

B. When the fire temperature is set at the point, the gas extends more to shut the FIRE pressure switch in the detector. This abates the further resistance.

C. At the fire temperature set point, the gas inflates further so as to close the FIRE pressure switch in the detector. This diminishes the resistance moreover.

A. The Height and Resolve Height data are shown on the primary flight unit, The Multi function Control and Display unit can be select and read the Resolve Height.

B. The Height and Absolute Height data are displays on the primary flight display, The Multipurpose Control and Display unit can be choose and read the Absolute Height.

C. The Height and Decision Height data are shown on the primary flight display, The Multipurpose Control and Display unit can be select and read the Decision Height.

A. It is recognized by FAA that in accordance with this Specification will result in a high degree of standardization of content and format for all aircraft types;

B. The FAA recognized that a high degree of standardization of content and format for all aircraft types will lead to compliance with this Specification;

C. It is recognized by FAA that a high degree of standardization of content and format for all aircraft types could be achieved if this Specification were obeyed;

A. When making this specification, the rules are generally refer to the rules that used by FAA in making its rules.

B. When making this specification, we use the exact identical construction rules with FAA in making its specifications.

C. The rules of construction followed in the preparation of this specification are the same as generally used by the FAA in the preparation of its rules.

A. To identify component and aeras that may have exhibited lower margins of safety,in hand analyses were checked.

B. Analyses were checked to identfy available component and aeras where exhibited lower margins of safety may exists.

C. To identify in hand component and aeras,analyses were checked where exhibited lower margins of safety may exists.

A. A component of a system used to treat waste water. Including washbasin, water cabinet, toilet system, etc.

B. That portion of the system which is used for disposal oil water and waste. Includes items such as wash basins, water closets, flushing systems, etc.

C. The part of a system used to treat waste water. Including washbasin, water pipe, flushing system and so on.

A. 转动旋钮开关

B. 旋转按钮开关

C. 转动开关

A. 手册中的计量单位必须一致

B. 手册中的计量单位必须与实际的情况下保持一致

C. 手册中的计量单位可以实际可用