除防冰培训需（ ）年复训一次

98.Accessand locationinstructionsareprovided hereunless obvious.

97.Other informationmaybe displayed on the cover.

96.Maintenanceinformation needs to becontinuously updated.

95.Explain how to avoid and noticefuelcontamination.

94.Thisprocedure is applicable only in digital mode.

93.Make sure that the tension in the cablesiscorrect

92.Move therod in the opposite direction

91.Identifythewires withsleeves of different colors

90.Make sure that there isno dust onthesurface.

89.Calculate the pressurewiththe applicable formula