Make sure that the label fully attaches to the surface and that there are no bubbles.

A. When you do work with cleaning agents, use breathing equipment.

B. When you do work with cleaning fluid , use breathing equipment.

C. When you do work with cleaning fluid , use breath equipment.

A. Continuing Airworthiness Programs may be prepared according to the related Federal Aviation Regulations for all types of general aviation airplanes and components.

B. All types of general aviation airplanes and components are certified by the applicable Federal Aviation Regulations which require the preparation of Continuing Airworthiness Programs.

C. Continuing Airworthiness Programs may be prepared for all types of general aviation airplanes and components certificated under the applicable Federal Aviation Regulations.

A. 如果因出现腐蚀而不得不拆除螺栓，则涂抹润滑油。

B. 如果因腐蚀而不能拆卸螺栓，则涂抹渗透润滑油。

C. 出现腐蚀时不可以拆卸螺栓，需要先涂抹防蚀剂。

A. The positive pressure relief valves are fail safe devices. If the aft outflow valve cann’t be closed, these positive pressure relief valves bleed fuselage pressure overboard.

B. The positive pressure relief valves are fail safe devices. If the positive pressure relief valves fails closed, these aft outflow valve bleed fuselage pressure overboard.

C. The positive pressure relief valves are fail safe devices. If the aft outflow valve fails closed, these positive pressure relief valves bleed fuselage pressure overboard.

A. 当反推收回时，确保飞机远离人员。

B. 当反推放出时，确保人员远离飞机。

C. 当反推运动时，确保人员远离飞机。

A. It is necessary to define symbols, abbreviations and terminology for the clear understanding of the information presented in various sections of the Handbook.

B. Define signatures, short words and jargon necessary for understanding clearly of the information contained in every section of the Handbook.

C. It is important to define signs, acronyms and nomenclature for the understanding of the information provided in these sections of the Handbook.

A. 系统的这个部分用来显示数量、温度和液压油的压力，包括的项目有传输机、指示器和告警系统等。

B. 用来显示液压油的质量，温度和压力的系统部分，包括转换器、指示器和告警系统等元件。

C. 系统中用来指示液压油的油量、温度和压力的部分，包括传感器、指示器和告警系统等组件。

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. Exterior Placards and Markings are required for ground servicing instructions, inspections, cautions, warnings.

B. Exterior Labels and Markings are required for ground servicing instructions, inspections, cautions, warnings.

C. Exterior Placards and Markings are required for ground servicing instructions, inspections, warnings, cautions.

A. 在此种情况下，文件的标题页和目录页必须遵循每一部分给出实际出版日期。

B. 在此种情况下，文件每一部分之前的标题页和目录页必须标明实际出版日期。

C. 在此种情况下，标题和目录页要放在文档每个部分之前，并必须给出实际出版日期。