The Check List may also contain supplemental information pertinent to the operation of the airplane, such as performance data, optional equipment operation, etc., that the pilot might routinely use.

A. Because of the risk of contamination, you must do this task in a very clean environment.

B. To prevent environmental pollution, this task must be done in a very clean area.

C. In order to prevent contamination, the task you must do is to find a very clean environment.

A. Substitutes with different quality can be used.

B. You can not use substitutes with same quantity.

C. Equivalent substitutes are permitted to use.

A. 不要让清洁剂接触带有瑞尔森（Rilsan）涂层的零件。

B. 不要使用含氯的溶剂清洁带有瑞尔森（Rilsan）涂层的零件。

C. 不可以使用含氯的瑞尔森（Rilsan）溶液清洁带有涂层的零件。

A. Compressed air will push contamination into the display unit.

B. The display unit will be contaminated by compressed air.

C. Air pressure will push the dirt into the display unit.

A. When showing a low flow or not sufficient cooling condition, the low flow sensor produces an alarm signal of the flight compartment for warning.

B. When a low flow or under cooling condition occurs, the low flow sensor provides an alarm signal to the cabin compartment for alert.

C. When a low flow or not sufficient cooling condition occurs, the low flow sensor supplies an alarm signal to the flight compartment for annunciation.

A. 确保襟翼和副翼微调手轮已收回并处于零位置。

B. 确保襟翼收起到零位，且副翼配平手轮处于零位。

C. 确保襟翼收上，副翼配平手轮处于零位。

A. During ground speed braking, all the spoiler panels are activated.

B. During ground deceleration, all the spoiler panels are closed.

C. During ground speed stabilizes, most of the pedals are activated.

A. 将线路穿过线槽顶部。

B. 将天线穿过基座顶部。

C. 将天线穿过插槽顶部。

A. 应提供描述可能出现的故障、如何识别这些故障以及这些故障的补救措施的故障排除信息。

B. 提供的排故信息应描述可能出现的故障、如何识别相关故障以及相应的补救措施。

C. 应提供描述可能出现的故障、如何识别这些故障以及补救措施的排除信息。

A. 描述飞机发动机时，应对冷却（ 散热）系统进行描述，包括整流罩盖板。

B. 描述飞机发动机时，应描述冷却（ 散热）系统相关的信息，包括通风外壳。

C. 描述飞机发动机时，应描述空调系统相关的信息，包括通风罩板。