Clean the opaque plastic surfaces.

A. Pilots have more opportunity to move stabilizer to nose up position during takeoff thanks to the mach trim actuator who commands elevator to a more nose down position.

B. During takeoff, pilots have more opportunity to move elevator to nose up position thanks to the mach trim actuator who commands stabilizer to a more nose down position.

C. During takeoff, pilots have more opportunity to move elevator to nose down position thanks to the mach trim actuator who commands stabilizer to a more nose up position.

A. 加入溶剂使油漆变得更稀薄。

B. 加入溶剂使油漆变得更稳定。

C. 在油漆里加入更多溶液。

A. 保证手柄和滚柱之间是干净的。

B. 确保杆和滚柱之间有连接。

C. 确保杆和滚轮之间有间隙。

A. 风扇和增压器是一个四级压气机。

B. 增压器是一个四级压气机风扇。

C. 风扇是一个四级增压器的压气机。

A. 燃油在燃烧室内燃烧。

B. 燃油通过喷嘴进入雾化器。

C. 燃油通过雾化器进入燃烧室。

A. If there is hum from the loudspeaker, don＇t adjust the potentiometer.

B. Adjust the potentiometer unless hear a hum from the loudspeaker .

C. Adjust the potentiometer until the loudspeaker no longer hums.

A. 松散接头会造成损伤。

B. 错误连接会造成损伤。

C. 损伤的原因是松散连接。

A. That section of the systems which controls the position and rotation of the trailing edge flaps.

B. That portion of the systems which controls the position and movement of the trailing edge flaps.

C. That part of the systems which controls the position and rotation of the flaps.

A. If the two indications do not agree, do the test again.

B. If there is a conflict between the two indications, repeat the test.

C. If the two indicators show any conflict, repeat the test.

A. 推荐在手册中添加“非正常程序”部分。

B. 鼓励“异常程序”加入手册中。

C. 鼓励“异常流程”步骤被合并入手册。