A、 双环路系统按照机组的要求执行回路切换和决断功能,当驾驶舱出现故障指示时,该功能被称为自动自询;
B、 当驾驶舱出现故障指示时,双环路系统自动执行本应由机组作出的回路切换和决断功能,该功能被称为自动自询;
C、 当驾驶舱出现故障指示时,双环路系统自动执行机组所需的回路开关和判断功能,该功能被称为自动自询;
答案：B
A、 双环路系统按照机组的要求执行回路切换和决断功能,当驾驶舱出现故障指示时,该功能被称为自动自询;
B、 当驾驶舱出现故障指示时,双环路系统自动执行本应由机组作出的回路切换和决断功能,该功能被称为自动自询;
C、 当驾驶舱出现故障指示时,双环路系统自动执行机组所需的回路开关和判断功能,该功能被称为自动自询;
答案：B
A. The filter must be replaced before putting new oil in the system.
B. The replacement of the filter is optional before refueling the system.
C. The filter can not be replaced unless you put hew oil in the system.
A. You do not need to give the return processes in its entirety unless you need to comprehend the system.
B. Unless you need to comprehend the system,do not need to fully show the return lines.
C. Return lines need not be shown completely if the system need not be realized.
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. 本手册包括定期发动机冷转和控制,油液系统的排放,以及静电接地等程序。
B. 本手册包括定期发动机试车、油液系统控制或排放、静电接地等程序。
C. 本手册包括发动机油液系统的测试、控制或排放,以及发动机静电接地等程序。
A. The usual control for the left pack ensures that it supplies air at a temperature. The temperature gives the occasional cooling for the flight compartment.
B. The normal control for the left pack makes sure that it supplies air. The cooling provides the necessary temperature for the flight compartment.
C. The usual control for the left pack assures that the temperature of the supplied air will provide the control cabin with the needed cooling.
A. 当按下其中一个按钮,数字字母显示器上会显示电压和电流
B. 当按下其中一个按钮,模拟数字显示器上会显示电压和电流
C. 当转动其中一个旋钮,模拟数字显示器上会显示电压和电流
A. 可以在强风天气下打开货舱门,强风对于打开的货舱门是非常危险的。
B. 不要在强风天气下打开货舱门,强风对于打开的货舱门是不安全的。
C. 不要在强风天气下打开货舱门,强风对于打开的货舱门是非常危险的。
A. 在线路上再安装多个垫圈。
B. 在管道上再安装多个垫圈。
C. 在管道上再安装多个螺栓。
A. This issue has not yet been fully found.
B. This issue has not yet been thoroughtly explored.
C. This issue has not yet been widespreadly explored.
A. 绕其轴线旋转此曲柄
B. 绕其圆心旋转此杆
C. 绕其轴线旋转此轴
