Always use these words with their approved meanings.

A. Maintenance should be accomplished preventively in accordance with the airplane service or maintenance manual.

B. Appropriate airplane service or maintenance manual shall be developed for the accomplishment of preventive maintenance.

C. Preventive maintenance should be accomplished in accordance with the appropriate airplane service or maintenance manual.

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.

A. Limitations related to operable systems or equipment may contain in this section or in section 9, supplements.

B. The supplements in this section or section 9 include the limitations associated with selectable systems or equipment.

C. Limitations associated with optional systems or equipment may be included in this section or in section 9, supplements.

A. 保留勤务部件，更换那些损坏的。

B. 报废损坏的部件后，保留所有可用的。

C. 保留所有可用的部件，报废那些损坏的。

A. Accumulate the thickness of the shim as follows: t=x-y.

B. Calculate the thickness of the shim as follows: t=x-y.

C. Calculate the width of the shim as follows: t=x-y.

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. All range distances shall be expressed in nautical miles.

B. All range dimensions shall be defined in kilometers.

C. Nautical miles should not express all range distances.

A. 涡轮发动机速度表通常以涡轮最大转速的百分比来测量转速。

B. 涡轮发动机转速表通常以涡轮额定最大转速的百分比来测量转速。

C. 涡轮发动机速度计通常以涡轮转动的最大速度的百分比来衡量。

A. 你需要在安装发动机时更换大量零件。

B. 更换发动机时，你可以安装大量部件。

C. 在发动机安装时可能更换大量部件。

A. Do not smell the compound fumes.

B. Do not smell the solvent fames.

C. Do not breathe the solvent fumes.