Lesson 22 multiple choices--model exchanges-E
A. broken surface
B. noise abatement procedure 消噪程序
C. obstruction
D. runway strength
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Lesson 22 multiple choices--model exchanges-F
A. Runway edge lights failure
B. Runway centerline lights failure
C. Runway threshold lights failure
D. Runway end lights failure
Lesson 22 model exchanges-G
A. 59
B. 35
C. 15
D. 30
Lesson 22 model exchanges-H
A. The landing gear collapses
B. The tyres blow out
C. The tug breaks down
D. The towbar is broken.
Lesson 22 model exchanges-I
A. Frozen ruts and ridges
B. Snow and ice
C. Standing water
D. A lot of debris
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