2. 外语
  3. A—feedback J—data processing B—floppy disk K—data capture C—check digit L—card reader D—keyboard M—electronic cash E—flow chart

A—feedback J—data processing B—floppy disk K—data capture C—check digit L—card reader D—keyboard M—electronic cash E—flow chart

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问题 A—feedback J—data processing
B—floppy disk K—data capture
C—check digit L—card reader
D—keyboard M—electronic cash
E—flow chart N—index
F—command O—encode
G—control unit P—shareware
H—backbone network Q—display unit
I—integrated circuit
( )软盘 ( )指令
选项
答案B F
解析
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