If the maneuver cannot be performed safely, a warning against attempting it shall be provided.

A. The main gear doors are pneumatically sequenced to remain open while the gear is extending or retracting.

B. The main gear doors are hydraulically sequenced to remain open while the gear is extending or retracting.

C. The main gear doors are automatically sequenced to remain open while the gear is extending or retracting.

A. 燃油在燃烧室内燃烧。

B. 燃油通过喷嘴进入雾化器。

C. 燃油通过雾化器进入燃烧室。

A. 推荐的燃料节约程序应包含一个告诫，如果适用的话，制造商推荐的功率设置必须在磨合期内使用。在新的和新大修的发动机的磨合期必须使用制造商推荐的功率设置。在这期间使用经济的动力设置可能会对发动机的寿命造成损害。

B. 如适用，推荐的节油程序应包括相应的告诫，提醒在全新的和刚大修过的发动机磨合期内必须使用制造商推荐的功率。此段时间使用经济功率可能会损害发动机寿命。

C. 建议的燃油节约程序应包含一个警告（如适用），即在新发动机和新大修发动机的试车期内必须使用制造商建议的功率设置。在此期间使用经济型功率设置可能会对发动机寿命造成不利影响。

A. 因为轴的损坏，导致泵不运转。

B. 由于泵的设计问题，导致其停止运转。

C. 泵运转失常的原因在于叶轮的损坏。

A. 更换零件的话，要持续处于低气压状态。

B. 如果持续处于低气压状态，就需要维修零件。

C. 如果低压状态持续，则更换组件。

A. 如何解释处理潜在问题和紧急情况。

B. 解释如何识别潜在问题和处理紧急情况。

C. 可能的问题和紧急情况需要得到解释。

A. Aluminum wire should not be attached to engine mounted accessories or used in areas having corrosive fumes, severe vibration, mechanical stresses, or where there is a need for frequent disconnection.

B. Aluminum line should not be connected to attachments which are mounted on the engine and also not be applied in domains where corrosive gases, serious oscillation, mechanical forces exist or where it is necessary to disconnect frequently.

C. Aluminum cable should not be linked to accessories installed on the engine. It should also not be used in the event of corrosive fumes, serious vibration, mechanic loads or the place where frequent disconnections are required.

A. This program is not available at present.

B. This procedure is not applicable at this time.

C. This program is not reasonable now.

A. Obey the removal tasks for the components.

B. Follow the installation procedures for the components.

C. Obey the removal procedures for the components.

A. 小心地取出配平盖板内的备份磁带。

B. 小心地从胶带上拆除装饰盖。

C. 小心地移除调整片，用其他的带子盖上。