A、 The operation procedure requires that the maintenance behavior be logically executable.
B、 The logical maintenance steps or operating procedures constitute the maintenance procedures.
C、 Break down maintenance activities into logical steps or operations as required by procedures.
答案：C
A、 The operation procedure requires that the maintenance behavior be logically executable.
B、 The logical maintenance steps or operating procedures constitute the maintenance procedures.
C、 Break down maintenance activities into logical steps or operations as required by procedures.
答案：C
A. Turn the cap counterclockwise.
B. Turn the cap clockwise.
C. Rotate the cap clockwise.
A. The arid welding coat may be polished with thin abrasive paper to hold a smoother layer.
B. The waterless painting coat may be worn with precise abrasive paper for a smoother surface.
C. The dried spray coat may be sanded with fine sandpaper to obtain a smoother finish.
A. The section of the engine which contains the sleeve, master and link rod assemblies, cams, cam drive gears, tappet guides, rollers, carriers, etc.
B. The section of the engine which contains the crankshaft, master and link rod assemblies, cams, cam drive gears, tappet guides, rollers, carriers, etc.
C. The section of the engine which contains the crankshaft, master and manifold assemblies, cams, cam drive gears, tappet guides, rollers, carriers, etc.
A. Clean the surface to make sure that the sealing is satisfactory.
B. Clean surfaces to ensure the bonding as required.
C. Clean the surface to make sure that the bond is satisfactory.
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. 冷却系统可以在客舱控制以提供冷却空气。
B. 冷却系统提供冷却空气控制客舱温度。
C. 冷却系统及其控制为客舱提供冷却空气。
A. 特殊尺寸应显示在图形中。
B. 详细尺寸应显示在图纸上。
C. 主要尺寸应显示在图纸上。
A. 火灾是因为过热或者有火焰的液体泄漏，并且可能飞机不安全了。
B. 火灾可由过热或易燃液体泄漏引起，并且可能飞机就危险了。
C. 火灾可由过热或易燃流体泄漏引起，并可能危及飞机安全。
A. Procedures contain tasks that give instructions on how to perform them.
B. Procedures contain general instructions that show you how to do tasks.
C. Procedures contain instructions that tell you how to do a task.
A. During the system test, the PSU nitrogen mask doors will open and the nitrogen masks will appear in the nitrogen box if the door test stop or the tapes are not installed.
B. If the door test stop or the masking tape is not installed, the doors of the PSU oxygen box will open and the oxygen mask will remain in the original position.
C. The PSU oxygen box doors will open and the oxygen masks will go out of the oxygen boxes during the functional test if you do not install the door test stop or the masking tape.
