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card_74832.txt
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Text File
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1991-04-12
|
933b
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42 lines
-- card: 74832 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 2707
-- name: #314
----- HyperTalk script -----
on openCard
global group,rightone
put 26 into group
put "A" into rightone
pass openCard
end openCard
-- part contents for background part 20
----- text -----
Question #26
-- part contents for background part 1
----- text -----
2H-1-2.2 What keying method is used to transmit RTTY messages?
-- part contents for background part 11
----- text -----
Frequency shift keying of a radio-frequency signal.
-- part contents for background part 27
----- text -----
On-off keying of the radio-frequency signal
-- part contents for background part 28
----- text -----
Digital pulse-code keying of an unmodulated carrier
-- part contents for background part 29
----- text -----
On/off keying of an audio-frequency signal
-- part contents for background part 43
----- text -----
Correct answer is A