A.protect other users
B.use the relevant facilities
C.help the single users out
D.deny programmers privileges
A.a lack of applications software
B.poorly thought-out user interfaces
C.the complicated technology
D.an inappropriate choice of operating systems.
A.Hardware B.Software
C.Neither of them D.Both of them
A.hardware is more important than software
B.hardware is less important than software
C.hardware is as important as software
D.Hardware is more expensive than software
A.Locking up terminals.
B.Replacing data in other storage facilities.
C.Supplying a password before data access.
D.Ranking data frequently in computer files.
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