415.Make sure that the pressure in the cabin is almost zero( )

522.The precision of the gauges must agree with the applicable quality standard( )

521. The Federal Aviation Regulations require the use of "maximum continuous power" ， during certification of anairframe and engine combination， to show compliance with certain standards

520.Regardless of whether or not the augment or tubes contain heat exchanger surfaces, they should be inspected for cracks along with the remainder of the exhaust system( )

519.As only approved limitations may be included in this Section , an introductory statement to this effect shall be contained in a prefatory note or the opening paragraph( )

518.伺服控制组件( )

517.Drill a hole at the intersection of the two lines( )

516.姿态指示仪指示姿态 ( )

515.The manufacturer＇s masthead , publication title , aircraft model and issue and revision dates or codes may be omitted from individual pages at the option of the manufacture in small, permanently bound manuals( )

514.在钻孔之前,要确保钻头的尖端是锋利的( )

513.It is not necessary to include a relocated chapter table of contents if the total chapter has been relocated, but the subsystem relocations should then be identified in the table of contents at the front of the book( )