题目内容

Lesson 22 短听力选择 3听一遍，选择正确答案

A. Due engine check
B. Due noise abatement
C. Due ground vehicle
Due outboard engine problem

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A. Taxiway P, O, L and M
Backtrack and taxiway O, L and M
C. Backtrack and taxiway P, L and M
D. Taxiway O, L and M.

A. Due standing water
B. Due slippery surface
C. Due snow and ice
Due frozen ruts

A. 挖
B. 压
C. 挤
D. 拌

A. 挖
B. 压
C. 挤
D. 拌