A、 For inspections, repair and overhaul of the aircraft and its systems and units, those producers recommended time limits and life of parts if possible.
B、 Those manufacturers recommended time limits for inspections, maintenance and overhaul of the aircraft, its systems and units, and life of parts, as applicable.
C、 Those manufacturers gave time restrictions to inspect, repair and maintenance the aircraft, its systems and units, and according to the situation they gave the life of parts .
答案：B
A、 For inspections, repair and overhaul of the aircraft and its systems and units, those producers recommended time limits and life of parts if possible.
B、 Those manufacturers recommended time limits for inspections, maintenance and overhaul of the aircraft, its systems and units, and life of parts, as applicable.
C、 Those manufacturers gave time restrictions to inspect, repair and maintenance the aircraft, its systems and units, and according to the situation they gave the life of parts .
答案：B
A. 发动机分析仪的功能是通过示波器等仪表或设备分析发动机性能或状态。
B. 发动机分析系统使用传感器等仪器或设备采集数据并应用于发动机性能或状态分析。
C. 发动机分析系统被用于分析发动机性能或状态，以供示波器等仪表或设备使用。
A. The section of the engine system which contains the turbine shafts and reduction gears.
B. The section of the engine system which contains the propeller shafts and reduction gears.
C. The section of the engine system which contains the connection shafts and reduction gears.
A. "EMERGENCY EXIT" placard at exit hatch over Left wing is illegal.
B. "EMERGENCY EXIT" placard at exit hatch over Left wing is not legible.
C. "EMERGENCY EXIT" placard at exit hatch over Left wing is missing.
A. Find out which door has a fault and is closed.
B. Make sure that which door has a failure.
C. Find out which door has not closed.
A. 本章应提供制造商认为必要的信息，以便在飞机使用寿命期内可能需要进行的各种维修、大修或重大维修时正确校平飞机。
B. 本章提供制造商认定的必要信息用以保证飞机在全寿命期中进行各种维护，翻修或大修后正确校准飞机。
C. 本章提供制造商确定需要的信息用以保证飞机在运行期间进行各种维修，翻修或大修后适当配平飞机。
A. According to Boeing Docs and associated ADs, changing the dimension of the thrust reverser upper locking actuator lock sensor target can result in slow detection of the failure or undetected failure.
B. Based on the Boeing Docs and the associated ADs, if the size of the thrust reverser upper locking actuator lock sensor target is increased, it may result in delayed or undetected the actuator failure.
C. As described in Boeing Docs and the associated ADs, if the orientation of the locking actuator on the thrust reverser locking sensor target changes, the actuator failure will be delayed or undetected.
A. Handbooks shall be readily revisable.
B. Handbooks shall be readily available.
C. Handbooks shall be easy revisable.
A. A centrifugal pump supplies hydraulic fluid to the unit.
B. The unit is isolated from hydraulic fluid through a centrifugal pump.
C. A centrifugal pump withdraws hydraulic fluid from the unit.
A. 用于指示低压的压力计使用更灵活的管子，更容易展开和卷绕。
B. 用于指示较低压力的仪表使用更易弯曲的管子，线圈更易散开和缠绕。
C. 用于指示较低压力的压力表使用的软管更加柔软，可以随时解开和盘绕。
A. The gears will automatically engage if a malfunction occurs.
B. If there is proper functioning, the gears will automatically engage.
C. If there is a malfunction, the gears will automatically disengage.
