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A—feedback J—data processingB—floppy disk K—data captureC—check digit L—card r
A—feedback J—data processingB—floppy disk K—data captureC—check digit L—card r
游客
2024-06-26
54
管理
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 [br] ( )校验数位 ( )编码
选项
答案
C O
解析
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