If there is no contamination, start the operation again.

A. 确保工作区域干净，无工具和其它物品，所有的接近盖板已经关闭。

B. 确保工作区域、工具和其它物品是干净整齐的，接近盖板已经关闭。

C. 确保工作区域、工具和其它物品是干净整齐的，接近盖板可以接近。

A. Do a hardness test for turning tool.

B. Conduct a hardness test for the carbide insert.

C. Take a hardness test for the chuck.

A. 小心确认管路尽可能靠近探头支架的面板而不要碰到探头。

B. 小心确认接头尽可能靠近面板的天线支架而不要碰到天线。

C. 小心确认探头尽可能靠近面板的天线支架而不要碰到天线。

A. 在最宽处测量裂纹的宽度。

B. 在最宽处测量凹坑的宽度。

C. 在最宽处测量刮痕的宽度。

A. This documentary includes appropriate instructions for continuing airworthiness.

B. This document contains appropriate instructions for continued airworthiness.

C. This document covers proper orders for continuous airworthiness maintenance program.

A. 拆下接合表面漆层周围的转接板。

B. 去除转接板接合面周围的底漆涂层。

C. 拆卸转接板来去除接合面周围的面漆。

A. Crucial angle of attack is the angle at which a stream or air flow begins to split from a surface,causing a decrease in efficiency. It is important for designing dynamic surfaces ,such as airplane wings,turbine blades,as it determines the maximum attack angle that can be achieved without causing loss of lift or thrust.

B. Crutial angle of attack is the angle at which a stream or air flow begins to seperate from a surface,causing a decrease in efficiency. It is important for designing aerodynamic surfaces ,such as airplane airfoils,turbine blades,as it determines the maximum attack angle that can be achieved without causing loss of lift or thrust.

C. Critical angle of attack is the angle at which a fluid or air flow begins to separate from a surface, causing a reduction in the efficiency of the flow. The critical attack angle is an important consideration in the design of aerodynamic surfaces, such as airplane wings, turbine blades, as it determines the maximum angle of attack that can be achieved without causing a loss of lift or propulsion.

A. 确保不要使用不相关的单词，因为这将改变短语动词的意思。

B. 确保不要将无关的单词连在一起，因为这会改变名词词组的意思。

C. 确保不要连用意思相反的单词，因为这会改变固定搭配的意思。

A. 导航系统信息在主飞行显示器显示。

B. 导航系统信息在辅助飞行显示器显示。

C. 导航系统信息在主维修显示器显示。

A. 安装时非必要不要拉伸封严。

B. 不要过度拉伸已安装的必要封严。

C. 在安装封严件时不要过度拉伸。