247.The valve pressurize and filter oil ( )

690.Make shure that the fastener heads are flush with the skin ( )

689.Install the sealing ring in the groove of the spherical bearing( )

688.Those instructions are necessary to carry out the scheduled sevring ( )

687.泵安装在液压马达后面( )

686.确保接下来用于安装程序的工具是可用的。 ( )

685.Airplanes modified by STC are not the responsibility of ABC ( )

684.Remove of the AC Current Transformer ( )

683.Some fixed or variable fairings such as those on the nose and tail and between the fuselage and the wing and the stabilizers are aerodynamic fairings( )

682.Pull the transparent plastic collar away from the nose of the electrical latch( )

681.Make sure that the door is flush with the adjacent surfaces ( )