171、雷达罩大部分材料是玻璃纤维。

52、The ventilation system uses differential pressure to pull air out of the airplane.

51、Put a transparent sheet of plastic on the surface.

50、He removed the access panel to see the corroded tube.

49、"Maintenance Practices" which are a combination of servicing, removal/installation, adjustment/test, inspection/check, cleaning/painting, and approved repairs should follow the Troubleshooting Section.

48、Remove the four screws that attach the flange to the cover.

47、Find the cause of the incorrect indication.

46、每一节应从右侧页面开始。

45、Interconnects to other systems should be plainly noted.

44、逆时针旋转盖子。

43、Drains let fuel in the vent system return to the tanks.