If the circuit breaker opens, de-energize the circuit.

A. It is necessary to add fluid to the hydraulic reservoir.

B. Drain fluid to the hydraulic reservoir as necessary.

C. Add fluid to the hydraulic reservoir as necessary.

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. 最大证明的侧风速度

B. 最大演示侧风速度

C. 所展示的最大穿风速度

A. The introduction should be included in an alphabetical index by subject.

B. An alphabetical index by subject is to be included in the introduction.

C. The introduction includes an alphabetical index subject.

A. 封面上的信息将由制造商自行决定。

B. 封面包含的信息将由制造商保留。

C. 封面必须包含制造商保留的信息。

A. Reinstall the supply ducts in the wing de-icing system.

B. Install the telescopic ducts in the wing de-icing system.

C. Install the elastic ducts in the wing anti-icing system.

A. The aircraft navigation systems provide the flight which is required by the crew,and meet the the most provisionally safety requirements.

B. The aircraft navigation systems provide the flight which is required by the crew,and meet the the most appropriate safety requirements.

C. The aircraft navigation systems provide the crew with the data required for flight within the most appropriate safety requirements.

A. 在此推荐清单中，更换部件对于起落架收放系统和其相关的指示系统来讲是不合理的。

B. 在此推荐清单中，起落架收放系统和适用的指示系统没有可更换的部件。

C. 此推荐清单不能用于起落架放下系统部件更换但适用于指示系统。

A. All essential or alternating equipment installed on a particular plane when provided shall be in the equipment list.

B. The equipment list shall include all necessary or alternative equipment installed on a particular aircraft when delayed.

C. The equipment list shall contain all required or optional equipment installed in the particular airplane when delivered.

A. If the clearance dimension is not accurate, adjust the clearance dimension between the extend proximity sensor [44A] and the target [45]. Some of the ducts in the air distribution system are wrapped with insulation material.

B. Adjust the clearance dimension between the extend proximity sensor [44A] and the target [45] in case of the clearance dimension is out of tolerance. Some of the ducts in the air distribution system are wrapped with non-conductive material .

C. Adjust the clearance dimension between the extend proximity sensor [44A] and the target [45] until the clearance dimension is out of range. Some of the ducts in the air distribution system are wrapped with compound material.