问题
单项选择题
One solution to major security problems is ______, which are frequently installed to fix knownsecurity holes.
A．additions
B．compensations
C．patches
D．complements
答案
参考答案：C
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One solution to major security problems is ______, which are frequently installed to fix knownsecurity holes.
A．additions
B．compensations
C．patches
D．complements
参考答案：C