问题
单项选择题
A firewall is a security system designed to (62) an organization’s network against (63) ．
A．prevent
B．protect
C．develop
D．exploit
答案
参考答案：C
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A firewall is a security system designed to (62) an organization’s network against (63) ．
A．prevent
B．protect
C．develop
D．exploit
参考答案：C