试题详情

Put the blanking caps on the open ends of the telescopic duct and the slat duct.

A在伸缩管和缝翼输送管的开口端盖上堵盖。

B在伸缩管和缝翼输送管的末端打开堵盖。

C在防冰管和缝翼输送管的末端打开堵盖。