2124.Arrows shall be used to indicate flow direction when needed to understand the schematic diagram.

A. The damper prevents abnormal movement of the control.

B. The control is protected from unusual movements by the damper.

C. The damper prevents sudden movement of the control.

A. 雷达天线的状况对其性能有重要影响。

B. 雷达罩的状况对其性能有重要影响。

C. 雷达的性能受到其状态的重要影响。

A. 基本上,它是以对飞行员最有用的形式来呈现已被证明的概念的行业标准化指南。

B. 基本上,它是一个指导行业标准化的证明概念,以一种最有用的形式提供给飞行员。

C. 基本上,它是一个证明行业标准化概念的指南,并提供一种对飞行员最有利的形式。

A. Write the instructions in the mandatory mode.

B. Write the instructions in the imperative form.

C. Write the instructions in the active mode.

A. 凹坑没有伤及保护漆层。

B. 划痕没有穿透保护层。

C. 划痕没有贯穿保护膜。

A. Maximum Landing Weight is maximum weight supplied for the landing contact.

B. Minimum Landing Weight is minimum weight provided for the landing touchdown.

C. Maximum Landing Weight is maximum weight approved for the landing touchdown.

A. 每一节的文章都要有一份参考表格目录,以数字顺序列出各段落的标题。

B. 每一章节的内容都要有一份参考目录,以字母顺序标出各段落的主题。

C. 每一节的正文之前都要有一份目录,以页码顺序列出各段落的标题。

A. In accordance with the laws,the ACOs have authorized and designated certain inspection and certification responsibilities to Designated Engineering Representatives(DERs),who are qualified individuals formally tested but not employees of the FAA.

B. The ACOs have been authorized by statute to delegate certain inspection and certification responsibilities to Designated Engineering Representatives(DERs),who are properly qualifiedprivate persons not employed by the FAA.

C. The ACOs have dedicated certain inspection and certification responsibilities to Designated Engineering Representatives(DERs) as per the Act,the DERs are not employees of the FAA,but some qualified personnel agreed by FAA.

D. esignated Engineering Representatives(DERs) as per the Act,the DERs are not employees of the FAA,but some qualified personnel agreed by FAA.

A. 关键词汇常常发生在文字中用于连接不同的思想。

B. 关键词汇常常出现在文中用于连接不同的想法。

C. 关键词汇常常闪现在课文中用于连接不同的想法。

A. Remove the magnesium drain plug from the hydraulic reservoir.

B. Replace the magnetic drain plug of the oil tank.

C. Remove the magnetic drain plug from the oil tank.