A、 The airworthiness and safe operation of an airplane is assured if it＇s used as its original design purpose, properly inspected and carefully maintained.
B、 The manufacturer is intended to utilize an airplane with sound inspection and maintenance practices because that is the basis for assuring the airplane remains airworthy and safe to operate.
C、 The airplane is designed to be used as the manufacturer＇s intention. Users shall properly inspect the airplane and do sufficient maintenance to assure its airworthiness and operation safety.
答案：C
A、 The airworthiness and safe operation of an airplane is assured if it＇s used as its original design purpose, properly inspected and carefully maintained.
B、 The manufacturer is intended to utilize an airplane with sound inspection and maintenance practices because that is the basis for assuring the airplane remains airworthy and safe to operate.
C、 The airplane is designed to be used as the manufacturer＇s intention. Users shall properly inspect the airplane and do sufficient maintenance to assure its airworthiness and operation safety.
答案：C
A. If you use cleaner in a closed space, make sure that there is ventilation in the work area.
B. Ensure that there is adequate airflow in the work area when using solvent in an enclosed space.
C. If you use solvent in a confined space, make sure that there is restricted airflow in the work area.
A. This section includes limitations adapted by the airworthiness authority.
B. The limitations included in this Section are approved by the airworthinessauthority.
C. The limitations included in this Section are adopted by the airworthiness authority.
A. 应说明总容量和可用燃料，如果不可用燃料超过FAR23的限制，在飞行中不可用数量的信息应被提供。
B. 如果不可用燃油超过FAR23的限制，则应说明总容量和可用燃油并确定提供在飞行中不可用燃油量的信息。
C. 应说明总容量和可用燃油，如果不可用燃油超过FAR23的限制，应提供确定在飞行中不可用燃油量的信息。
A. 这些作动器控制副翼和升降舵使他们产生运动，以便控制飞机的飞行路径。
B. 这些作动器控制副翼和升降舵的运动，副翼和升降舵控制飞机的飞行路径。
C. 飞机的飞行路径是通过作动器让副翼和升降舵产生运动来控制的。
A. Before install the software, the plane has to be on the ground and the engines shut down.
B. The airplane must be on the ground with the engines off before you can install software.
C. The aircraft should be on the ground and engines power off before you upload the software.
A. Immediately clean the area if one of the two compartments is affected by lead contamination.
B. If there is mercury pollution in the compartments, clean one of the two areas immediately.
C. If there is mercury contamination in one of the two compartments, clean the area immediately.
A. 任何关于限制，仪表标识或者指示牌的改变，会在飞行操作手册的基本限制（第二部分）被说明。
B. 任意改变极限，仪表标记或者指示牌的基本限制应该在飞行员操作手册中规定。
C. 对飞行员操作手册基本限制（第二部分）中的限制、仪表标志或标牌的任何变更均应予以说明。
A. 确保L和R PACK开关在P5-10空调面板上显示OFF位。
B. 确保P5-10空调面板上的L和R PACK开关处于OFF位置。
C. 确保P5-10面板上的L和R PACK在OFF位时，空调按钮在关闭位。
A. Stringers and the upper wing skin are called vent channels. The vent channels go through drain float valves in the center tank.
B. Stringers and the upper wing skin are compose of the vent channels. The vent channels got exhaust float valves from the center tank.
C. Stringers and the upper wing skin make the vent channels. The vent channels have drain float valves in the center tank.
A. If they fail, temporary damage can occur.
B. If they drop, permanent injury can occur.
C. If they fall, permanent damage can occur.
