A、 The gyroscope will become stable before less than 15 seconds.
B、 The gyroscope will become stable for at least 15 seconds.
C、 After about 15 seconds, the gyroscope will become stable.
答案：C
A、 The gyroscope will become stable before less than 15 seconds.
B、 The gyroscope will become stable for at least 15 seconds.
C、 After about 15 seconds, the gyroscope will become stable.
答案：C
A. For clean configuration of landing, the limit load factor in g unit should be provided. For spinning and aerobatic aircraft, the load factor of flaps down should be provided as well.
B. The limit maneuvering load factors, in g units of acceleration, for clean cruise and landing configurations, shall be given. The negative g limit, flaps up, should be given for aircraft approved for spinning or aerobatics.
C. The flight maneuver load factor limit in the unit of g should be given for the smooth configuration of aircraft cruising and landing. For aircraft approved for spin or aerobatics, load limits should also be provided when flaps are opened.
A. 控制组件的出口压力值，否则它不能稳定在正确压力范围。
B. 输出控制组件的压力，该组件不能稳定在正确压力范围。
C. 控制组件出口压力值不能稳定在正确压力范围。
A. 风扇为带有整体式感应电动机的单级风扇，每个风扇各有一个单向活门并作为一个组件安装。
B. 风扇作为单级风扇和整体电动机各有一个单向活门并作为一个组件安装。
C. 风扇是单级风扇，整体传动电动机，电机各自有一个单向活门并作为一个组件安装。
A. When taking off from the runway, deviation pointers in the ADF indicators show the pilot in which direction he/she must control the airplane.
B. During the approach to the runway, deviation pointers in the course indicators show the pilot in which direction the aircraft must go.
C. In the approaching process, deviation pointers in the flight path deviation indicator show the pilot how to control the aircraft.
A. 涡轮发动机包括用于控制通过发动机空气流量的压缩机排气系统，用于发动机除冰的冷却空气系统，以及发动机启动系统。
B. 涡轮发动机包括压气机引气系统、空气冷却系统、热空气系统、发动机启动系统，其中压气机引气系统能控制通过发动机的空气流量，空气冷却系统和热空气系统用于发动机防冰。
C. 涡轮发动机包括控制通过发动机空气流量的压气机引气系统、空气冷却系统、用于发动机防冰的热空气系统和发动机启动系统。
A. 列出机械员工具箱内工作所需的工具、设备和器材。
B. 列出机械员工具箱内通常不包含的工作所需的工具、设备和器材。
C. 将机械员日常工作中工具箱内所需的工具、设备和器材列出来。
A. The description could be pronounced in the active voice.
B. Descriptive content can be written in active voice.
C. You should read it in voice as you write the descriptive text.
A. The test will stop when the pressure is larger than 7000 kpa.
B. Stop the test if the pressure reaches 7000 pa.
C. Stop the test when the pressure is more than 7000 kpa.
A. Each system is composed of basic components and all equipment, mechanic controls and system related electric and hydraulic units.
B. Basic components and all apparatus are made up of each system, including mechanical controls and electrical and hydraulic units related sytem.
C. Each system includes the basic components and all instruments, mechanical controls, electrical and hydraulic units related to the system.
A. Do not extend or retract landing gear above this speed.
B. Do not expand or retract landing gear at this speed.
C. Do not put down or retract landing gear by more than this speed.
