264.To prevent unwanted friction ,polish the surface( )

673.The Check list may also contain supplemental information pertinent to the operation of the airplane( )

672.Maintenance information shall include General procedural instructions and application of protective treatments after inspection( )

671.Explain how to avoid and notice fuel contamination( )

670.Remove the remaining sealant from the floor covering( )

669.抓住螺丝刀松开卡子 ( )

668.确保传感器处无液压油渗漏( )

667.Each page shall bear the date of the original issue until revised and, when revised, that of the latest revision ( )

666.所有页面上必须有制造商的报头,出版物标题,飞机型号,发行或修订日期。( )

665.Approved adjectives are given in their basic form , with their comparative and superlative forms in parentheses where applicable( )

664.The manufacturer may establish procedures to provide feedback on unairworthy conditions that were discovered when complying( )