Ground service bus has no power with external power available.

A. 从安装位置向上提起气瓶。

B. 向上提起做动筒到安装位置。

C. 提起并安装气缸到位。

A. The main gear leg could be held by the side stay.

B. The main gear leg could be hampered by the side stay.

C. The main gear leg could be contained by the side stay.

A. 变更一些词性的缩写，使其与标准缩写一致。

B. 一些词性缩写的变化与标准缩写一致。

C. 更新标准缩写使其满足一些词性缩写变更的要求。

A. A three-axis accelerometer gives acceleration data of the horizontal, lateral, and longitudinal axis. The flight data recorder system sensors send data about the position of the flight surfaces and controls the FDAU.

B. A three-axis accelerometer gives accelerating data with the vertical, parallel, and longitudinal axis. The flight data recorder system sensors send data and the position of the flight surfaces and controls to the FDAU.

C. A three-axis accelerometer gives acceleration data along the vertical, lateral, and longitudinal axis. The flight data recorder system sensors send data about the position of the flight surfaces and controls to the FDAU.

A. The arid welding coat may be polished with thin abrasive paper to hold a smoother layer.

B. The waterless painting coat may be worn with precise abrasive paper for a smoother surface.

C. The dried spray coat may be sanded with fine sandpaper to obtain a smoother finish.

A. Each electrical system is identified by a code.

B. Each code of electrical system is identified.

C. Each system is identified by an electrical code.

A. If you use solvent in a closed space, make sure that there is good airflow in the work area.

B. When using composite in confined space, make sure it has good ventilation.

C. You can not use sealant in enclosed space on condition that there is no good ventilation.

A. The cover title shall be "Pilot＇s Operating Handbook" or "Polit＇s Operating Handbook and FAA Approved Airplane Flight Manual."

B. The name of the book might be "Pilot＇s Operating Handbook" or "FAA Approved Airplane Flight Manual."

C. The cover could be named as "Pilot＇s Operation Instruction" or "Pilot＇s Operation Instruction and FAA Approved Airplane Flight Instruction."

A. On pressurized aircraft, the cabin air is distributed with a system of air ducts leaded from the pressurization source into and throughout the cabin. Typically, air is ducted to and released from ceiling ventilation.

B. Distribution of cabin air on pressurized aircraft is managed with a system of air ducts leading from the pressurization source into and throughout the cabin. Typically, air is ducted to and released from ceiling vents.

C. On pressurized aircraft cabin air is distributed with a system of air ducts leaded from the pressurization source into and throughout the cabin. Typically, air is ducted to and released from ceiling flap.

A. 超控泵关闭时, 系统压力显示会显示液力油的压力。

B. 当液力泵不工作时, 系统油量显示不会显示液力油箱的油量。

C. 当液压泵关闭时，系统压力指示显示液压油箱内的压力。