A、 The aircraft navigation systems provide the flight which is required by the crew,and meet the the most provisionally safety requirements.
B、 The aircraft navigation systems provide the flight which is required by the crew,and meet the the most appropriate 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 provisionally safety requirements.
B、 The aircraft navigation systems provide the flight which is required by the crew,and meet the the most appropriate 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. An inoperative pump will be identified by a decontaminated filter.
B. Contaminated filter elements indicate a defective pump.
C. If filter elements are clean , the filter elements are inoperative.
A. 用可用的方式计算压力。
B. 计算带可用公式的压力。
C. 用适用的公式计算压力。
A. 在《持续适航维修大纲》检验编号中的章节编号的两位数字中，第一位数字由GAMA规范2号编号系统确定，第二位数字由制造商依次确定。
B. 在《持续适航维修大纲》检查编号的两位数字中，第一位数字由GAMA 2号规范编号系统决定，第二位数字由制造商按顺序决定。
C. 在《持续适航维修大纲》检查文件编号中代表节号的两位数字里，第一位数字应遵守GAMA 2号规范的编号体系，第二位数字由制造商按相应的顺序确定。
A. 对邻近区域做检查。
B. 对表面区域做检查。
C. 对内部区域做检查。
A. 接通断路器。
B. 打开电路接头。
C. 拔出跳开关。
A. 本程序中要求不止一个人。
B. 对于本程序来说，更多的人员要求是必要的。
C. 执行本程序需要超过一个人。
A. This system is used to expand and return the landing gear.
B. This system is used to extend and retract the landing gear.
C. This system is used to extract and retract the landing gear.
A. 液压系统包括将一定压力（包括泵、压力调节器、管路、阀门）的液压油输送到一个汇聚点（总管），再分配到用户系统的部件和组件。
B. 这些单位和组件在压力作用下将液压油输入到包括油泵、压力调节器，管路，活门等部位，最后到达一个公共地点，即分配阀，是为了再次分配到其他设定好的系统中。
C. 这些单位和组件将液压油输入到各个压力组件中，包括油泵、压力调节器，管路，活门等。后来液压油汇聚到一个通用点（分配阀），为了再分配到其他定义好的系统中。
A. Utilizing an airplane as intended by the manufacturer and sound inspection and maintenance practices is basis that assures the airplane remains airworthy and safe to operate.
B. One of the basis for assuring the airplane remains airworthy and safe to operate is sound inspection and maintenance practices and forms.
C. Utilizing an airplane as intended by the manufacturer is the only basis for assuring the airplane remains airworthy and safe to operate.
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.
