415. When the selector is in the 100% position, the user will( ) pure oxygen

A. 当动力源(电动,气动或液压)为单个部件提供服务或为单个功能系统提供服务时,该动力源将包含在其所服务的部件或系统中讨论。

B. 当动力源(电动,气动或液压)为不同的部件提供服务或为不同的功能系统提供服务时,该动力源将包含在其所服务的部件或系统中讨论。

C. 当动力源(电动,气动或液压)为单个部件提供服务或为单个功能系统提供服务时,该动力源将包含在其所服务的部件和系统中讨论。

A. 当你顶升或者放下飞机时,必须保持水平姿态。

B. 当你顶升或者放下飞机时,必须保持水平高度。

C. 当你顶升飞机时,必须保持水平高度。

A. Pass the cablethrough the pulley

B. Pass the cablethrough the turnbuckle

C. Pass the cablethrough the quadrant

A. This chapter of the Pilot＇s Operating Handbook shall contain only those limitations required by regulation or necessary for safety operation of the airplane and approved by the regulatory authority.

B. This Section of the Pilot＇s Operating Handbook shall abstain only those limitations required by regulation or necessary for safe operation of the airplane and approved by the regulatory authority.

C. This Section of the Pilot＇s Operating Handbook shall contain only those limitations required by regulation or necessary for safe operation of the airplane and approved by the regulatory authority.

A. 批准的修理部分应包括执行修理所需的工艺和技术

B. 批准的修理部分应包括科学和技术,需要进行修理

C. 申报的加工部分应包括进行加工所需的措施和技术

A. This program usually includes two pages: one writing page and one drawing page

B. This program usually contains to pages: one test page and one image page

C. This program usually consists of two pages: one test page and one illustration page

A. It is very important to explain the fuel safety precautions.

B. It is very important to obey the fuel safety precautions.

C. Combining the fuel safety precautions is very important.

A. Proper warnings and cautions shall be provided stead of the text while notes may precede or follow suitable text up to the material to be highlighted. warning, cautions and notes shall not show procedural steps nor shall they be numbered.

B. Unlike warnings and cautions which must lines in the rear of text, notes may precede or follow porper text up to the material to be highlighted, warning, cautions and notes shall not provide procedural steps nor shall they be numbered.

C. Like warnings and cautions which must lines in the rear of text, notes may precede or follow porper text up to the material to be highlighted, warning, cautions and notes shall not provide procedural steps nor shall they be numbered.

A. 发动机中包含螺旋桨轴和减速齿轮的部分。包括用于前部安装的附件驱动装置等。

B. 发动机中包含螺旋桨轴和减速齿轮的部分。但不包括用于前部安装的附件驱动装等。

C. 发动机中包含螺旋桨轴和齿轮的部分。包括用于前部安装的附件驱动装置等。

A. 飞机不同的尺寸和面积决定于飞机的用途,但是所有现代飞机都有一些共同的部件。

B. 飞机不同的形状和尺寸决定于飞机的用途,但是所有现代飞机都有一些共同的部件。

C. 飞机不同的形状和尺寸决定于飞机的用途,但是所有现代飞机都有一些共同的特性。