Listen to the text. Decide if each statement is True, False or Not mentioned according to what you hear.
1. Flight-deck crews often rely on visual movements when spoken communication is difficult.
The information given by the speaker is .
2. Experienced aircraft directors need to learn only a small number of hand signals.
Judging from the speaker’s explanation, this statement should be marked .
3. The flight-deck lights change colour to tell pilots when they are allowed to move.
As far as the speaker’s account goes, this statement is best classified as .
Atbilžu varianti:
not mentioned
true
false
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