47、Use an equivalent material if the specified one is not available. 如果指定的材料不可用,请使用等效材
料。

A. 　 The exit doors are mainly used for passenger boarding

B. 　 The exit doors are only used for evacuation.

C. 　 The exit doors are not only used for the passengers to evacuate from the airplane but also used for normal exit。.

A. 　 A certificated pilot who owns or operates an airplane not used as an air carrier is authorized by FAR Part

A. 　对临近区域做检查

B. 　对表面区域做检查

C. 　对内部区域做检查

A. 　找到中点,然后将测量出的数据除以 2。

B. 　为找到中点;将测量出的间隙除以 2。

C. 　找到中点,用 2 除以测量出的间隙。

A. 　 The STE dictionary gives an approved alternative that has a different part of speech.

B. 　 The STE dictionary gives an approving alternative word has a different word class.

C. 　 The English dictionary gives an approved alternative word with a different part of speech.

A. 　 To evaluate the effectivity of the recommended inspection procedures and time intervals, it' s mandatory
to inform the ABC Aircraft Company of the significant details of inspection results, repairs and modifications
accomplished.

B. 　 Repairs and modifications accomplished that are resulted from the significant details of inspection must be
reported to the ABC Aircraft Company to assess whether the recommended inspection procedures and time
intervals are effective.

C. 　 Communications with ABC Aircraft Company about the significant details of inspection results, repairs and
modification accomplished is necessary for the purpose to verify the effect of the recommended inspection
procedures and time intervals.

A. 　 The pump is installed behind the hydraulic motor.

B. 　 The gearbox is installed behind the pneumatic motor.

C. 　 The hydraulic motor is installed behind the pump.

A. 　那些说明可以作为定期维修所必需的参考

B. 　那些指令是执行定期维护所必需的

C. 　这些指示必须进行有计划维修

A. 　显示连接点的位置,转弯半径的图解应包括在内。

B. 　附着点的位置和转弯半径应包括插图。

C. 　插图显示连接点的位置还包括转弯半径。

A. 　在词典中给出的形容词都是原形,如果有比较级和最高级,以括号标示出。

B. 　词典中每个被认可的形容词都列入基本表格,如适用,将其比较和最高级形式放在一起。

C. 　词典中每个被认可的形容词都以原形给出,如适用,将加入比较级和最高级表格。