软件水平考试

【单选题】
A、firewall is a (67) system designed to (68) an organization’s network against threats.
A、operating
B．programming
C．security
D．service

网考网参考答案：C
网考网解析：
暂无解析 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>