1183、Handbooks shall be readily revisable.

A. 　 转动滑轮之前,拆下销子。

B. 　 转动扇形盘之前,取下销子

C. 　 转动轮毂之前,拆下销子。

A. 　 A brush is cleaned by the filter element.

B. 　 The filter element and a brush are clean.

C. 　 Use a brush to clean the filter element.

A. 　 Use back thrust to change the director of the exhaust to achieve contrary thrust

B. 　 Thrust reverser is used to change the di rection to the exhaust gases for reverse thrust.

C. 　 To change the direction of the exhaust nozzle, the thrust reverser is used to obtain the opposite thrust

A. 　 “维护操作”包括维修 拆卸/安装、调整/测试检测/检查、清洁/喷漆和批准的维修,应遵循故障排除部分

B. 　 “维护操作“包括维修、拆卸/安装、调整/测试检测/检查、清洁/喷漆和正当的维修,,应遵循故障排除部分

C. 　 “维护操作”包括维修、拆卸/安装、调整/测试检测/检查、铲除/喷漆和批准的维修,应遵循故障排除部分

A. 　 Dry all metal parts that have different metal inserts or deep blind holes in an oven at 225 to 275F(107 to

A. 　 The elevators must move in an even manner.

B. 　 The elevators must keep moving accordingly.

C. 　 The elevators must move correspondingly.

A. 　英语是科学、工艺和人际关系的交流语言。

B. 　 英语是科学、技术和相关人员的互通语言。

C. 　英语是科学、技术和人际关系的国际语言。

A. 　 Before you use dangerous materials, obey these precautions、

B. 　 Before you use dangerous materials, omit these precautions、

C. 　 Before you use dangerous materials, disobey these precautions、

A. 　 The aircraft navigation systems provide the flight, which is required by the crew, and meet the most
provisionally safety requirements.

B. 　 The aircraft navigation systems provide the flight, which is required by the crew, and meet the most
appropriate safety requirements.

C. 　 The aircraft navigation systems provide the crew with the data required for flight within the most
appropriate safety requirements.

A. 　英语单词、复杂的句子结构以及多个含义和缩写词会对读者造成混淆。

B. 　复杂的句子结构、多个含义和术语以及多个英语单词会对读者造成混淆。

C. 　复杂的句子结构以及英语单词的多重含义和同义词会对读者造成混淆。