带有磁性的工具对罗盘系统有不利影响。

A. By using the basic provisions of FAR 21.50, revisions become consistent with the format of the specification.

B. FAR 21.50 provisions are the basic to the revisions which are consistent with the format of the specification.

C. To make revisions consistent with the format of the specification, the provisions of FAR 21.50 should be adopted as a basis.

A. 在本构型中，必须执行不同的测试程序。

B. 在本构型中，可以选用不同的测试程序。

C. 本次会议强制要求使用不同的测试程序。

A. Each section shall be started on a right-hand page.

B. Each section shall be stated on a left-hand page.

C. Each section shall be proceeded from a right-hand column.

A. 确保通过管路的流体没有气泡。

B. 确保通过管路的油液没有杂质。

C. 确保液压油流经管路没有阻碍。

A. 文本可以有一或两栏，带有或不带有理由。警告、注意和注释可用于突出或强调重点。

B. 带有理由或不带有理由的文本可以准备成为一栏或两栏。警告、注意和备注可用于标示出或强调重点。

C. 文本可以按照是否有理由来编写成一栏或两栏。警告、注意和注释可以用来突出或强调要点。

A. If the unit is not modified, its service life will be possibly shorter.

B. Without the modification of the unit, its service life is likely shorter than present.

C. Without the modification, it is possible that the service life of this unit will be shorter than usual.

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. 本规范将满足适用的政府监管要求。

B. 此指令符合适航官方要求。

C. 此规范适用于相关政府部门的要求。

A. Attach the threading cord to the new cable.

B. Attach the screw＇s cord to the new cable.

C. Attach the screw＇s wire to the new cable.

A. 第22章讲的是提供自动控制飞机飞行手段的组件和部件。包括控制方向、航向、姿态、高度和速度的组件和部件。

B. 第22章讲的是提供自动控制飞机飞行手段的组件和部件。包括控制方向、航迹、高度、姿态和速度的组件和部件。

C. 第22章讲的是提供自动控制飞机飞行手段的组件和部件。包括控制方向、航迹、姿态、高度和速度的组件和部件。