1039、This figure shows the structure of the system.

A. 　发动机提供三相电压,当发动机转子速度升高时,此电压的频率会增加:

A. 　记录对蒙皮表面进行的所有修理

B. 　记录对蒙皮封严进行的所有修理。
c、记录对蒙皮损伤进行的所有处理。

A. 　拧紧堵头至 6 牛顿

B. 　给堵头磅力矩至 6 牛米。

C. 　测量堵头紧力为 6 牛顿米。

A. 　这些密封剂的特性可预防腐蚀。

B. 　这些封严块的性能可阻止碰撞。

C. 　这些溶液的性质可防锈。

A. 　时间功能不累积小时。

B. 　计时功能不累积小时。

C. 　计时功能不计算小时"

A. 　 Check the cut for gaps that start at its corners.

B. 　 Examine-the opening for cracks that start at its corners.

C. 　 inspect the clearance of gate from the corner.)

A. 　未经保护,请勿进入发动机测试区域。

B. 　未经允许不得进入发动机试车区域

C. 　未经批准,请勿进入发动机测试控制中心。

A. 　 Install the cushion before you install the seat.

B. 　 install the seat before you install the cushion.

C. 　 Install the seat after you install the cushion.

A. 　用不同颜色的衬套来识别线路

B. 　识别不同颜色的金属丝套筒

C. 　用套简来辨别电线的颜色

A. 　 The Federal Aviation Regulations 'require "maximum continuous power.to be used during airframe and
engine combination certification to show obedience with certain criteria.

B. 　 Federal aviation regulations require "maximum continuing power" to be used during the certifying of the
airframe and engine to meet certain criteria.

C. 　 Federal aviation regulations,
"maximum continuous power", are used to show compliance with certain standards.