This chapter includes engaging, sensing, computing, amplifying, controlling, actuating and warning devices.

A. When the crossfeed system is open, it is possible for one fuel pump to supply fuel to the two engines.

B. When the supplying system is open, it is possible for one fuel pump to supply fuel to the two engines.

C. One fuel pump can supply fuel to two engines,as the supplying system is open.

A. 如果因出现腐蚀而不得不拆除螺栓，则涂抹润滑油。

B. 如果因腐蚀而不能拆卸螺栓，则涂抹渗透润滑油。

C. 出现腐蚀时不可以拆卸螺栓，需要先涂抹防蚀剂。

A. This Section shall be clearly stated and cross-referenced to the proper paragraph in Section 2 of the Handbook which consists of limitations.

B. This Section contains limitations which shall be clearly stated and cross-referenced to the proper paragraph in Section 2 of the Handbook.

C. The proper paragraph in Section 2 of the Handbook shall describe and cross-reference this Section included in this limitations.

A. 改变面板的位置。

B. 将面板移动到位。

C. 将脚蹬移动到位。

A. 在需要折叠的页面上，折叠时不允许页码可见。

B. 在需要折叠的页面上，以允许页码可见的方式折叠。

C. 在需要折叠的页面上，以这样的态度来折叠，并保证页码可变。

A. 用于在飞机外部提供照明的照明子系统。包括着陆灯、导航灯、位置指示灯、机翼照明灯、旋转灯、航行灯。

B. 用于在飞机外部提供照明的照明子系统。包括着陆灯、位置指示灯、航行灯、机翼照明灯、旋转式信号灯、出租车灯。

C. 用于为飞机外部提供照明的灯光子系统，包括着陆灯、导航灯、位置指示灯、机翼照明灯、旋转式信号灯、滑行灯等。

A. Make sure that the scale is not more than 400 knots.

B. Make sure that the indication is not more than 400 knots.

C. Make sure that the indication is not more than 400 miles.

A. 对现有的分析进行了审查，以确定可能存在安全裕度较低的部件和区域。

B. 从分析结果发现，有部件和相关区域显示出安全性能较低的迹象。

C. 故障分析结果显示，某些部件和区域现有些安全指标达不到设计要求。

A. 小心地把阀门组装在其位置上，并安装封圈和螺栓。

B. 小心地把阀门组件放置到位，并安装垫片和螺栓。

C. 小心地把组件阀门放置到位，并安装垫片和螺帽。

A. Make sure the drain hose＇s open end is oriented in align with the structure.

B. Direct the open end of the drain hose away from the storage construction.

C. Ensure that the open end of the drain hose faces away from the structure.