51、词典包括一些未经批准的词，如果能把这些词归在适用的技术名称类别中，它们可以是技术名称。

The dictionary includes some unapproved words that can be technical names if you can put them in theapplicable technical name category.

Some approved words are included in the dictionary, they. can be technical names if they belong toapplicable technical name category.

The dictionary contains some unapproved words, which can be put, in separate technical name category, they can be technical names.

正确答案：A

1429、压缩空气会将污染物吹入显示组件内。

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