52、解释如何检查它们是否正常运行，以及如何识别故障

Explain check them whether normal or not, and how to identify a fault.

Make cleat that if they operate properly and how to isolate the malfunction.

Explain how to check them for proper operation and how to recognize a malfunction.

正确答案：C

1428、The passenger cabin exhaust air goes through floor grilles to the circulation system or overboard.

1427、If the aircraft is parked on a slope,make sure that the wheel chocks are in position.

1426、它明确了制造商建议的部件或组件的退役时间(使用小时数、循环数或其他合适的因素)以及 FAA 要求的时寿部件或组件的退役时间。

1425、在同样的温度下固化密封胶。

1424、Identify the bell crank and shaft with marks to prevent incorrect installation。

1423、安全程序由制造商提供。

1422、CAP usually consist of two pages: one text page and one illustration page.

1421、Calculate the quantity of fuel necessary for the flight.

1420、Calculate the pressure with the applicable formula

1419、Braking system is used to ＇decrease run-down)time or stop propeller rotation during engine power-off conditions.