A、 If an engine overheat/fire detector can not operate, the engine and APU fire alarm unit alternatively changes to single loop operation. In the single loop module, only one loop must check the engine and APU fire detection module for an overheat or fire co
B、 If an engine overheat/fire detector fails to operate, the engine and APU fire detection module automatically changes to single loop operation. In the single loop mode, only one loop must detect an overheat or fire condition for the engine and APU fire det
C、 If an engine overheat/fire detector is inoperative, the engine and APU fire detection module automatically changes to single loop operation. In the single loop mode, only one loop must detect an overheat or fire condition by the engine and APU fire detect
答案：B
A、 If an engine overheat/fire detector can not operate, the engine and APU fire alarm unit alternatively changes to single loop operation. In the single loop module, only one loop must check the engine and APU fire detection module for an overheat or fire co
B、 If an engine overheat/fire detector fails to operate, the engine and APU fire detection module automatically changes to single loop operation. In the single loop mode, only one loop must detect an overheat or fire condition for the engine and APU fire det
C、 If an engine overheat/fire detector is inoperative, the engine and APU fire detection module automatically changes to single loop operation. In the single loop mode, only one loop must detect an overheat or fire condition by the engine and APU fire detect
答案：B
A. This section includes all the limits of the optional systems and equipment.
B. Limitations related to optional systems may be contained in this section.
C. Only the limitations which are relevant to optional systems might be including in this section.
A. 如图4所示，测量凹坑的深度。
B. 如图4所示，检查凹坑的尺寸。
C. 如图4所示，测量磨损的厚度。
A. If a supply shutoff valve was closed within five minutes, no maintenance performance is needed and shutoff periods are not accumulated.
B. Maintenance action is not necessary and shutoff periods are not calculated unless the shutoff valve was closed for less than five minutes.
C. When a supply shutoff valve was closed for five minutes, maintenance action is hardly required and shutoff duration are not included.
A. 驾驶舱话音记录器还原了滑行过程中四个视频输入的信号。
B. 驾驶舱话音记录器记录了飞行过程中四个音频输入的信号。
C. 驾驶舱黑匣子记录了飞行过程中四个视频输出的信号。
A. 确保电缆的张力是正确的。
B. 确保电缆的电压是正确的。
C. 确保钢索的张力是正确的。
A. Explain how to check them for proper operation and how to recognize a malfunction.
B. Describes how to check that they are functioning properly to identify faults.
C. Describes how to identify these failures so that these systems can function properly.
A. 在远离设备或金属框架建筑物的区域进行工作。
B. 在有设备或材料框架建筑物的区域进行工作。
C. 在远离设备或材料成型建筑物的区域进行工作。
A. Collect all maintenance records for the part PNxxxx.
B. Compile all maintenance logs for the component PNxxxx.
C. Collect all flight logs for the component PNxxxx.
A. 在容易腐蚀的区域投入使用复合材料来阻止腐蚀过程。
B. 在受影响的区域投入使用防腐化合物来阻止腐蚀进程。
C. 在被影响的区域投入使用防腐化合物来彻底阻止腐蚀。
A. 将钢索穿过导管至客舱地板下方。
B. 安装钢索，将其穿过座舱地板下方的导管。
C. 通过驾驶舱地板下方的导管安装线束。
