A、 The positive pressure relief valves are fail safe devices. If the aft outflow valve cann’t be closed, these positive pressure relief valves bleed fuselage pressure overboard.
B、 The positive pressure relief valves are fail safe devices. If the positive pressure relief valves fails closed, these aft outflow valve bleed fuselage pressure overboard.
C、 The positive pressure relief valves are fail safe devices. If the aft outflow valve fails closed, these positive pressure relief valves bleed fuselage pressure overboard.
答案：C
A、 The positive pressure relief valves are fail safe devices. If the aft outflow valve cann’t be closed, these positive pressure relief valves bleed fuselage pressure overboard.
B、 The positive pressure relief valves are fail safe devices. If the positive pressure relief valves fails closed, these aft outflow valve bleed fuselage pressure overboard.
C、 The positive pressure relief valves are fail safe devices. If the aft outflow valve fails closed, these positive pressure relief valves bleed fuselage pressure overboard.
答案：C
A. Tire wear increases with high speed.
B. The higher the speed is, the more fragile the tire becomes.
C. The tire blows out as the speed increases.
A. The correction installation of the upper drag strut can prevent the retraction of the lower drag strut.
B. If the upper drag strut is installed improperly, the lower one will be hit during retraction.
C. The removal of the upper drag strut has to be done properly so that the lower one can fully extend.
A. Be patient while the door is opening.
B. Be aware of the door when it is opening.
C. Be careful while the door is opening.
A. “目的”声明包含以下信息：(1)CAP与现有检查项目的关系以及制造商对CAP的目标。(2)可选的信息包括（但不限于）选择CAP的理由——CAP的要求是如何确定的（对服务历史、测试和分析的讨论）
B. “目的”语句包含以下信息：（1）CAP与现有检查计划的关系以及制造商对CAP的目标。（2）可选信息，包括（但不限于）用于选择CAP的基本原理——CAP要求是如何确定的（讨论服务历史、测试和分析）
C. “目标”用于描述以下信息：（1）此CAP与现有检查大纲的关系及制造商对此CAP的目标。（2）非强制信息，包括（但不限于）制定CAP检查项目的主要考量——即CAP要求是如何确定的（基于使用时间以及相关测试和分析进行讨论）。
A. That portion of the system is responsible for the fuel storage components in the system, comprising of storage tank, bag battery, ventilation system, battery and storage tank interconnection device, neck and cover of the wing filler, etc.
B. That portion of the system is used to store fuel, including integral tank sealing, bladder type cells, ventilating system, cell and tank interconnectors, over wing filler necks and caps, etc.
C. A portion in a system can store fuel. Covering storage tank sealing, bag battery, ventilation system, battery and storage tank interconnection device, overhead neck and cover of the wing filler, etc.
A. 在接触到升降舵调整片后缘时，将指示器归零。
B. 在接触到升降舵调整片前缘时，将指示器归零。
C. 当连接到升降舵调整片前缘时，将指示器一次性归零。
A. Operational Tags need to be listed or made a legend.
B. Operating Placards shall be listed or illustrated.
C. Operation Instructions have to be listed or mapped out.
A. 对现有分析进行了审查，以确定哪些部件和区域可能表现出较低安全边际。
B. 对现有分析进行了审查，以确定可能显示出较低安全裕度的组件和区域。
C. 现有的分析被审查，以确定可能阻止安全边际降低的部件和区域。
A. Starting system refers to those units, components and associated systems used for igniting the engine.
B. Starting system refers to those units, components and associated systems used for idling the engine.
C. Starting system refers to those units, components and associated systems used for starting the engine.
A. 每条指令用一句话写出，除非有两个或更多的动作。
B. 每句话仅写一条指令，除非有两个或更多的动作同时发生。
C. 每条指令除非有两个或更多的动作同时发生，否则仅用一句话写出。
