A、 Adjust the frequency to the value giving in table 1.
B、 Adjust the frequency per the value given in table 1.
C、 Adjust the frequency to the value given in table 1.
答案：C
A、 Adjust the frequency to the value giving in table 1.
B、 Adjust the frequency per the value given in table 1.
C、 Adjust the frequency to the value given in table 1.
答案：C
A. The computer needs to be backup at each interval.
B. The backup of the computer is necessary.
C. Back up your computer regularly.
A. Pilot reports on flight logbook of 908701 pages fluttering sound from left side of airplane during descend beginning at 11000 feet.
B. Pilot reports trembling sound from left side of airplane during ascend at 11000 feet on flight logbook 908701 page.
C. Pilot reports on flight logbook page 908701 fluttering sound from left side of airplane during descend beginning at 11000 feet.
A. Rapidly and fully retract Ram Air Turbine and make sure that it doesn＇t attach to other parts.
B. Slowly and fully extend Ram Air Turbine and make sure that it doesn＇t touch other parts.
C. Make sure that the Ram Air Turbine is completely opened and it doesn＇t touch the other unit.
A. The units and components which store, regulate, and deliver oxygen to the passengers and crew include oxygen bottles, relief valves, shut-off valves, outlets, regulators, masks, etc.
B. The units and components which reserve, adjust, and transfer oxygen to the passengers and pilots include oxygen bottles, relief valves, shut-off valves, outlets, regulators, masks, etc.
C. The units and components to store, adjust, and transfer oxygen to the passengers and crew include oxygen bottles, release valves, shut-off valves, outlets, regulators, masks, etc.
A. 盘旋着陆机动指当不能或不需直线仪表进近时飞行员为使飞机对准着陆跑道所做的机动动作。在塔台管制机场，必须得到空中交通管制许可，并且建立了机场目视参照后才能做此机动。
B. 盘旋着陆机动指当不能或不需直线仪表进近时飞行员为使飞机对准着陆跑道所做的机动动作。在塔台管制机场，必须得到空中交通管制的间隔，并且建立了机场目视参照后才能做此机动。
C. 盘旋着陆机动指当不能或不需直线仪表进近时飞行员为使飞机能在着陆场矫正所做的机动动作。在塔台管制机场，必须得到空中交通管制的间隔，并且建立了机场目视参照后才能做此机动。
A. A maximum distance of 50 feet is required between consumable materials and the work area.
B. Keep flammable materials at a minimum distance of 50 feet from the work area.
C. Explosive materials must be kept at least 50 feet away from the work area.
A. 在飞机座舱增压系统部分，应说明该系统如何与加热、通风、除霜和空调系统连接。
B. 在飞机座舱增压系统部分，说明该系统如何与加热、通风、除霜和空调系统同时使用。
C. 在飞机座舱增压系统部分，说明该系统如何与加热、通风、除霜和空调系统成为一体。
A. Obey the procedure if there is no debris in the oil sample.
B. If the fuel is not polluted, go on with the procedure.
C. If there is no contamination in the fuel sample, continue the procedure.
A. 液压系统包括将一定压力（包括泵、压力调节器、管路、阀门）的液压油输送到一个汇聚点（总管），再分配到用户系统的部件和组件。
B. 这些单位和组件在压力作用下将液压油输入到包括油泵、压力调节器，管路，活门等部位，最后到达一个公共地点，即分配阀，是为了再次分配到其他设定好的系统中。
C. 这些单位和组件将液压油输入到各个压力组件中，包括油泵、压力调节器，管路，活门等。后来液压油汇聚到一个通用点（分配阀），为了再分配到其他定义好的系统中。
A. Augment the pressure slowly (no less than one turn each minute).
B. Increase the pressure slowly (not more than one turn each minute).
C. Release the pressure slowly (not more than one turn each minute).
