The door is partially open for inflight operation and fully open for on-ground operation.

A. The needle moves horizontally along the gage.

B. The pointer moves vertically along the scale.

C. The indicator moves longitudinally along the edge.

A. Put the bell crank and shaft with identification to prevent improper installation.

B. Identify the bell crank and shaft with marks to prevent wrong installation.

C. Put the bell crank and shaft with identification to prevent wrong installation.

A. 空气部分包括从冷凝器入口到蒸汽回气回流和叶轮室的单元。

B. 空气部分包括从戽斗形进气口到蒸汽排气回流口和叶轮室所有组件。

C. 空气部分包括从进气口到排气反流和叶轮室的单元。

A. Count the velocity in the circuit.

B. Compute the current in the route.

C. Calculate the voltage in the circuit.

A. 松开断路测试开关。

B. 复位短路测试开关。

C. 松开短路测试开关。

A. 维持发动机运转20分钟。

B. 使发动机怠速运转20分钟。

C. 快速运行发动机20分钟。

A. Operators should negotiate with their local regulatory agency to adjust intervals to a best fit for their individual operational environments.

B. Airlines should consult local authority, the interval shall be adjusted although it best suits their unique operational environment.

C. In order to get the best intervals for their operational environments, operators should consult with local administration.

A. The engine sump and gearboxes are connected internally.

B. There are also internal connections between the engine sumps and gearboxes.

C. Internal arrangement of wires exist between the engine sump and gearboxes.

A. 应使用比例尺图对飞机的总体布局进行说明，该比例尺图由平面图、侧视图和正面视图组成，并在单页上以垂直顺序展示。

B. 应使用气动布局图对飞机总体安排进行说明，说明内容包括计划、侧面图和正面图，并以垂直顺序在单页上列出。

C. 应在单页上以横向顺序的呈现方式对飞机总体布局和示意图进行说明，包括平面图、侧视图和正面视图。

A. Check whether the linkage moves slightly or not.

B. Examine the linkage for smooth movement.

C. Inspect the status of the linkage movement.