408.In aviation , it is mandatory to correctly understand maintenance and operation documentation to make sure that systems operate safely and correctly and to protect human lives ( )

529.反推是把尾喷管的反向形成的力( )

528.The procedures shall clearly describe the step by step operation in a logical work flow sequence as necessary to gain access to and subsequently remove the hardware or install the hardware ( )

527.Show the date of the revision on each revised page( )

526.flow of fluid through the valve must be continuous( )

525.Each manual shall carry a list of Chapters or Sections contained in it ( )

524.如果机体制造商以任何方式改变部件制造商的文字或说明他应使用自己的刊头( )

523.STE 词典给出了一个经过批准的存不同词性的替代词。 ( )

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( )