Hydraulic fluid causes fast deterioration of painted surfaces.

A. Not only the basic principle of the reciprocating engine is simple, and also the assembly.

B. The basic principle of a jet engine is simple, and so is its construction.

C. The basic principle of the propeller driven engine is simple, as well as the installation.

A. 组件延伸至壳体，安装并连接在通信控制组件上。

B. 组件延伸至壳体组件，并与伸缩控制组件相连。

C. 组件延伸至壳体组件，并与通讯控制组件相连。

A. 在此过程中，使用12英寸螺刀手柄。

B. 在此过程中，使用12英尺扳手手柄。

C. 在此过程中，使用12英寸扳手手柄。

A. 如果你不能脱开杆的位置，新杆的长度很可能需要调节。

B. 如果你不能断开杆和活塞，可能量错了新杆的长度。

C. 如果你不能接合杆和活塞，新杆的长度可能是不正确的。

A. The air conditioning cooling system supplies cooled air to the cabin. Includes items such as the cooling unit, indicating systems related to the cooler operation, etc.

B. The air conditioning cooling system supplies cold air to the passenger cabin. Includes items such as the cooling unit, indicating systems related to the cooler operation, etc.

C. The air conditioning cooling system supplies cooled air to the passenger cabin. Includes items such as the cooling pack, indicating systems related to the cooler operation, etc.

A. The main oil/fuel heat exchanger uses the low temperature of the scavenge oil to reduce the fuel flow from the low pressure fuel pump.

B. The main oil/fuel heat exchanger uses fuel from the low pressure fuel pump to decrease the temperature of the scavenge oil.

C. The main oil/fuel heat exchanger sends fuel from the low pressure fuel pump to the scavenge oil lines to decrease the oil temperature.

A. 对泵的控制电门进行保护可以防止误操作。

B. 泵的控制电门可以对误操作进行保护。

C. 泵的控制电门上的保护装置可以防止意外操作。

A. Remove the failure components.

B. Replace the damaged parts.

C. Reinstall the damaged components.

A. 然而“紧急情况”反而总是排除需要立即快速反应的故障，例如整个动力装置故障、火灾或烟雾或机舱快速减压。

B. 然而“紧急情况”几乎总是包括需要立即快速反应的故障，例如整个动力装置故障、火灾或烟雾或机舱快速减压。

C. 然而“紧急情况”几乎总是排除需要立即快速反应的故障，例如整个动力装置故障、火灾或烟雾或机舱快速减压。

A. Decrease the pressure in the hydraulic system.

B. Bleed the speedbrake hydraulic system.

C. Disconnect the speedbrake hydraulic system.