Use caution to assure that probe is as close as possible to antenna base of panel without touching antenna.

A. “基准面”是一个假想的垂直面。以基准面为准来测量用于计算平衡的水平距离。

B. “基准面”上有一架假设的垂直平面，出于平衡考虑，所有的力矩距离都是从它开始测量。

C. “基准面”是一个假想的垂直平面，所有的横向距离都是从它开始测量的，以达到平衡的目的。

A. This procedure gives you the disassembly process.

B. You can find the procedures for disassembling in this section.

C. The assembly process can be found in this section.

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. Landing gear is left for ten minutes.

B. Landing gear should be kept extended for ten minutes.

C. Extend landing gear after ten minutes＇ retraction.

A. 根据相应的主题，涉及到门为主结构的扶梯。包括结构件、驱动机构和操纵装置、扶手等项目。

B. 主要结构为舱门的登机梯应被归入适当的主题中，包括结构件、作动机构和控制器和扶手等。

C. 以门为主要结构的楼梯应在相应主题下讨论，包括结构件、驱动机制、控制、扶手等问题。

A. 如果跳开关拔出，则断开电路。

B. 如果跳开关闭合，则断开电路。

C. 如果跳开关拔出，则接通电路。

A. If you use solvent in a closed space, make sure that there is good airflow in the work area.

B. When using composite in confined space, make sure it has good ventilation.

C. You can not use sealant in enclosed space on condition that there is no good ventilation.

A. 确保静压管没有堵塞。

B. 确保皮托管没有堵塞。

C. 确保排气管没有渗漏。

A. The audio input with highest priority will be decreased by amplifier.

B. The audio input will be increased by amplifier firstly.

C. The audio input that has the highest priority will be enlarged by amplifier.

A. 如果仅仅损坏了轮胎中间表面，轮胎还是可用的。

B. 如果损伤是胎间见线，轮胎需要更换。

C. 如果损伤只局限于胎面中部，轮胎是可用的。