If the microswitch becomes unserviceable, do the deactivation procedure of the actuator to prevent damage to the valve.

A. The housing for the voice recorder unit has these properties: water tolerance, shock resistant and heat resistant.

B. The container for the voice recorder unit has these properties: watertproof, spin resistant and heat resistant.

C. The container for the voice recorder unit has these properties: watertight, shock resistant and heat resistant.

A. Reserve the inflammable material at least 50 inches away from the work area.

B. Deposit the explosive substance out of 50 feet with the work area.

C. Keep flammable materials at a minimum distance of 50 feet from the work area.

A. 该速度指示仪此段弧线的上限是需襟翼放下时必须达到的最大速度。

B. 该速度指示仪此段弧线的上限是允许放襟翼的最大速度。

C. 该速度指示仪此段弧线的上限是襟翼收起情况下所允许的最大速度。

A. 抛光表面，直到它非常有光泽。

B. 打磨表面，直到它非常薄。

C. 在表面非常薄之前润色它。

A. 描述飞机仪表面板时，应命名并说明面板上的仪表、灯光、电门和控件的使用。

B. 描述飞机仪表面板时，应明确面板上各个仪表、灯、开关和控制按钮的名称，并描述各自操作方法。

C. 描述飞机仪表面板时，应命名并说明台板上的仪器、灯光、电门和控件的使用。

A. 所有三个螺栓孔必须与燃油管匹配。

B. 所有三个支架孔必须与燃油管对齐。

C. 所有三个支架孔必须与燃油管齐平。

A. 描述飞机的门、窗和出口时，应精确描述有关应急出口使用的。

B. 描述飞机舱门、窗和出口时，应给出使用救援通道的准确说明。

C. 描述飞机舱门、窗和出口时，应准确指导使用应急门。

A. Add 5 ml of hardener to the compound.

B. Add 5 ml of adhesive to the compound.

C. Put 5 ml of hardener to the component.

A. 两个电感器在后锁连杆上方工作。

B. 两个传感器位于后锁连杆的顶部。

C. 两个探测器在杆锁定位的后上方。

A. These tests need no special equipment or facilities except those installed on the aircraft, and are like the tests performed by flight crews.

B. These tests need some special equipment or facilities that are not installed on the aircraft. And these tests are the same to the tests performed by flight crews.

C. These tests need special equipment or facilities that are installed on the aircraft, and are identical with the tests performed by flight crews.