填空题
A — automatic document handling
B — printing in more than one color
C — collating
D — enlargement and reduction
E — adjusting the density
F — interruption
G — double-side copying
H — multiple paper tray
I — book copying
J — stapling for a multiple-page document
K — copy enhancement
L — PIN number/personal identification number
M — printing on different sizes of paper
N — a personal photocopying card credited with a number of copies
O — printing on cards and labels