Make sure that drag struts do not obstruct landing gear.

A. These requirements present the various maximum cleaning, transferring, storage, and packaging requirements for achieving and maintaining product item and system cleanliness to ensure the necessary product feasibility.

B. These requirements present the various minimum cleaning, handling, storage, and packaging requirements for achieving and maintaining product item and system cleanliness to ensure the necessary product feasibility.

C. These requirements present the various minimum cleaning, handling, storage, and transport requirements for achieving and maintaining product item and system cleanliness to ensure the necessary product integrity.

A. 描述飞机发动机时，应简要阐述异常运行。应保持在最低限度以帮助飞行员纠正形势或使他能够向机械师描述情况。它不应是一个维修程序。

B. 描述飞机发动机时，应简要阐述非正常运行。应在最低限度帮助飞行员改正情况或使他能够向机械师描述情况。它不应是一个维修程序。

C. 描述飞机发动机时，应对非正常运行情况进行简要描述。应以帮助飞行员纠正非正常情况或使其能够向机械师描述非正常情况为宜。无须是具体的维修程序。

A. Ensure that the label adheres tightly to the surface and that no bubbles are present.

B. Verify the full attachment of the label to the surface and accept the presence of bubbles.

C. Make sure the label is partially attached to the surface, ensuring there are no bubbles present.

A. Hydraulic fluid has no effect on painted surfaces.

B. Hydraulic fluid has positive influence on painted surfaces.

C. Hydraulic fluid has passive influence on painted surfaces.

A. 限制因素与可选系统和设备都是相关的，它们可以包括在这部分或者第9部 “附录”中。

B. 限制可选系统或设备的因素可能包括在这部分或者第9部“附录”中。

C. 与选装系统或设备相关的限制因素可以包含在本节内或者第9节“附录”中。

A. The basis for assuring an airplane remains airworthy and safe to operate is to combine the manufacturer＇s requirements with sound inspection and maintenance practices.

B. To ensure airworthiness and safe operation of an airplane, it is essential to follow the manufacturer＇s instructions in the utilization of airplane, and perform sound inspection and maintenance practices as well.

C. Airworthiness and safe operation are fundamental to aircraft utilization as required by the manufacturer, so sound inspection and maintenance practices are carried out.

A. The lower seal appears as the lower bearing is pulled down.

B. You can see the lower seal before pulling the lower bearing down.

C. Only after you pull the lower seal down can you see the lower bearing.

A. 仅B747刚引进时期，每个月就有4000页必须从手册中删减或增加进手册。

B. 在B747引进时期，仅每个月必须替换或增补的手册就有4000页以上。

C. 在B747刚引进的阶段，仅一个月就需要更换或增加约4000页到手册中。

A. 工作区域一定会有好的空气流通。

B. 工作区域内必须有好的空气流通。

C. 一定会有好的空气流通工作区域。

A. Separate the first part of the sentence as the subsequent items in the lateral list.

B. Apart the first part of the sentence from the subsequent items in the horizontal list.

C. Divide the first part of the sentence from the subsequent items in the vertical list.