A、 Do not put too much force on the brush when cleaning the carpet which can be easily damaged.
B、 To prevent damage to the carpet when you clean it, do not use too much force on the brush.
C、 Using too much force on the brush when cleaning the carpet will cause damage to it.
答案：B
A、 Do not put too much force on the brush when cleaning the carpet which can be easily damaged.
B、 To prevent damage to the carpet when you clean it, do not use too much force on the brush.
C、 Using too much force on the brush when cleaning the carpet will cause damage to it.
答案：B
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. The cover title shall be "Pilot＇s Operating Handbook" or "Pilot＇s Operating Handbook and FAA Approved Airplane Flight Manual".
B. The topic cover shall be "Pilot＇s Controlling Manual" or "Pilot＇s Controlling Manual and FAA Accepted Airplane Flight Manual".
C. The page topic shall be "Pilot＇s Managing Handbook" or "Pilot＇s Managing Handbook and FAA Authorized Airplane Flight Manual".
A. When preparing dangerous goods, follow the operational instructions.
B. Before you use dangerous materials, obey these precautions.
C. Prior to applying any hazardous material, understand the principles of it.
A. 问题的原因来自于燃油系统。
B. 问题的根源在燃油系统。
C. 故障的位置在液压油系统。
A. Make sure that the pressure in the cabin is almost zero.
B. Verify that the cabin pressure is not above zero.
C. Ensure that the pressure in the cabin is completely zero.
A. 当控制手柄到DN位时，齿轮箱壳体会打开，齿轮松开并退出，壳体关闭。
B. 当控制手柄处于DN位置时，起落架舱门会打开，起落架解锁并伸出，然后舱门关闭。
C. 将控制手柄推到DN位置时，货舱门将打开，传动装置解锁可用，收回后则关闭。
A. Give an explanation to show the specified risk or possible result.
B. Give an explanation to show the special risk or possible result.
C. Give an explanation to show the specific risk or possible result.
A. 计划性勤务包括内部清理等工作。不包括维修工作实施所要求的润滑程序。
B. 计划性勤务包括内部清理等工作。不包括润滑程序，这是维修工作实施所要求的。
C. 计划性勤务包括内部整理等工作。不包括润滑程序，这是维修工作实施所要求的。
A. 确保蒙皮未受损伤。
B. 确保皮肤未被侵蚀。
C. 确保蒙皮未划伤。
A. 当压气机机匣被冷却后，压气机叶片间距变小。
B. 当涡轮机匣被冷却后，涡轮叶尖距变小。
C. 当涡轮机匣被冷却后，涡轮叶片间距变小。
