确保紧固件头部与蒙皮齐平。

A. 确保层压板表面的温度保持恒定。

B. 保持温度恒定通过层板横截面。

C. 保证层板间的温度保持稳定。

A. 后缘襟翼有25个以上的组件。

B. 后缘襟翼超过25个单位。

C. 前缘襟翼超过25个单位。

A. The filter must be replaced before putting new oil in the system.

B. The replacement of the filter is optional before refueling the system.

C. The filter can not be replaced unless you put new oil in the system.

A. This procedure is only void in digital mode.

B. This procedure is only valid in digital mode.

C. This procedure is only ineffective in digital mode.

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.

A. 飞机的内部装饰板包括检修盖板和填充板。

B. 蒙皮覆盖机身外表面，包括接近门和加强件。

C. 飞机的蒙皮包括舱门和倍增器。

A. Those units means that they can prevent it from eroding.

B. Those units provide a method of deicing.

C. Those units provide a way to prevent the formation of ice.

A. "Towing and Taxiing" shall include procedures to be used such as ground turning techniques, use of parking brakes, connection of electrical power, etc..

B. "Towing and Taxiing" shall include procedures to be used such as ground steering techniques, use of chocks, connection of electrical power, etc..

C. "Towing and Taxiing" shall include procedures to be used such as ground turning techniques, use of brakes, connection of electrical power, etc..

A. This program is partially important to type B parts.

B. This procedure is of particular importance to type B parts.

C. This procedure is not especially important to type B parts.

A. 对现有分析进行了审查，以确定可能表现出较低安全裕度的部件和区域。

B. 对现有分析进行复核，对部件和区域进行标识，以显示出较低安全裕度。

C. 对于安全裕度较低的部件和区域进行标识并进行了现场分析审查。