辅助动机和主导动机是可以互相转化的。
A. 对
B. 错
Lesson 22 短听力选择 1听一遍,选择正确答案
A. Flight plan error
Boarding problem
C. Loading sheet error
D. Loading problem
Lesson 22 短听力选择 2听一遍,选择正确答案
A. 30
B. 55
C. 35
D. 40
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