It is under the tilte "Towing and Taxiing" that the instructions necessary to tow and taxi the aircraft in any of the probable conditions to which it may be subjected.

A. When hydraulic power is supplied, keep persons and equipment away from all control surfaces and landing gear.

B. When supplying power to the hydraulic system, persons and equipment should be away from all control surfaces and landing gear.

C. Persons and equipment shall be away from all hydraulic system control surfaces and landing gear when supply pressure.

A. Proper recipe shall be adopted to measure the pressure.

B. The pressure shall be estimated by using accurate equation.

C. Calculate the pressure with the applicable formula.

A. 使用一种润滑油，这种润滑油可以润滑松紧螺套。

B. 使用油壶润滑松紧螺套。

C. 使用油罐润滑锁扣。

A. 可以用警告、注意和备注来说明重要的事情，或者强调要点。

B. 使用警告、注意事项和说明来着重强调重要事项。

C. 警告、注意和注释可以用来突出或强调重要的要点。

A. 描述飞机静压系统时，应阐述加热和通风系统的影响以及开窗对备用静压系统的影响。

B. 描述飞机静力系统时，应阐述加热和通气系统以及开窗对备用静力系统的影响。

C. 描述飞机静压系统时，应阐述加热和排气系统以及开窗对替代静压系统的影响。

A. 在测试结束后，拆下热敏装置。

B. 完成测试后，拆下传感器。

C. 安装传感器后方可进行测试。

A. Find the fueling valve switch for the tank that will get the fuel you are scheduled to transfer.

B. Find the fueling valve switch for the tank that you are scheduled to transfer.

C. Find the fueling valve switch for the tank that need to transfer fuel.

A. Make sure that the cargo compartment pressure stays constant.

B. Make sure that there is pressure in the cabin.

C. Make sure that the cabin pressure stays constant.

A. Make sure that the bolts are tight.

B. Make sure that the screws are securely installed.

C. Make sure that the bolts are loose.

A. Get the approval of the design authority,whatever it is necessary to change the repair scheme.

B. Change the repair scheme, until getting the approval of the design authority.

C. If it is necessary to change the repair scheme, get the approval of the design authority.