268.These safety precautions are the minimum necessary for work in the maintenance area ( )

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( )

663.To give or send signals that adjust, operate, or keep something to a limit,or that cause something to operate ( )

662.The Handbook producer should arrange the material within paragraphs in a manner he considers to be most informative to the kind of pilot expected to use the Handbook ( )

661.If the pressure supply stops, cancel the test( )

660.CAREFULLY LIFT THE MAGNETIC LEVEL INDICATOR UNTIL YOU [ ]THE MAGNETS( )