A、 If the filters become clogged after an unusually short time, send them to the laboratory for analysis of the contamination.
B、 When the filters become clogged in an abnormal short time, send them to the library to analyze the contamination.
C、 When the filters become blocked unconventionally after a very short time , send them to the lab for calculation of the contamination.
答案：A
A、 If the filters become clogged after an unusually short time, send them to the laboratory for analysis of the contamination.
B、 When the filters become clogged in an abnormal short time, send them to the library to analyze the contamination.
C、 When the filters become blocked unconventionally after a very short time , send them to the lab for calculation of the contamination.
答案：A
A. 打开客舱的一扇门，确保客舱不是全封闭的。
B. 打开客舱入口的一扇门，确保客舱没有增压。
C. 打开通往客舱的一扇门以保证通行没有压力。
A. 对现有分析进行了审查，以确定可能表现出较低安全裕度的部件和区域。
B. 对现有分析进行复核，对部件和区域进行标识，以显示出较低安全裕度。
C. 对于安全裕度较低的部件和区域进行标识并进行了现场分析审查。
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
A. 确保发动机排气区周围有安全围挡。
B. 确保发动机进气区前面有安全界线。
C. 确保工程排气区前面有安全阻碍。
A. If you do not obey these precautions, injury to your skin and lungs can occur.
B. It will cause damage to your skin and liver unless you follow the cautions.
C. If you understand the instructions, you body will not be hurt.
A. 当你选择这些按钮中的其一时，数字字母显示只出现电压和频率。
B. 当你选择这些按钮中的其一时，模拟数字显示只出现电压和频率。
C. 当你选择这些开关中的其一时，模拟数字显示只出现电压和频率。
A. Water above the kitchen floor can seep in through small holes in the floor surface, invisible to the naked eye.
B. Eyes cannot see the vapor which may penetrate through small holes of the floor surface in the galley.
C. Moisture above the galley floor can go through small holes in the floor surface area and stay out of view.
A. 飞行操纵面是连接在机翼上的可移动翼型结构，包括副翼、襟翼、扰流板、配平片、阻力装置和平衡装置等。
B. 飞行面是指连接在机翼上的可移动的机翼结构，包括副翼、襟翼、扰流板、标签、阻力和平衡装置等项目。
C. 飞行表面是附在机翼上的可拆卸翼型的结构，包括副翼、襟翼、扰流板、翼片、阻力和平衡装置等。
A. 如果故障频繁出现，进行系统测试。
B. 如果故障定期出现，进行系统测试。
C. 如果故障随机出现，进行操作测试。
A. When describing the airplane＇s Landing Gear, how its indication system functions shall be explained.
B. When describing the airplane＇s Landing Gear, how its emergency response system functions shall be explained.
C. In the description of the airplane＇s Landing Gear, how its warning system functions shall be explained.
