767.应按照适用的飞机服务手册或维修手册完成预防性维修。 ( )

　Maintenance should be accomplished preventively in accordance with the airplane service or maintenance manual.

　Appropriate airplane service or maintenance manual shall be developed for the accomplishment of preventive maintenance.

　Preventive maintenance should be accomplished in accordance with the appropriate airplane service or maintenance manual.

正确答案：C

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170.A separate lamp is included in the left dome light that is part of the emergency light system( )

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168.用消毒剂溶液冲洗管道。 ( )

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161.The procedure excludes the removal of the piston( )