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问题 单项选择题

当PFD上高度显示框变成琥珀色，MCP高度窗出现50000，驾驶舱出现响2秒断8秒的音响，表示（）

A、未调整高度数值而高度显示窗数字发生了变化

B、FCC故障

C、高度窗失效

D、高度旋钮失效

答案

参考答案：A

判断题

药剂消毒处理种子时，种子必须浸胀。
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单项选择题

NAC’s (Network Access Control) role is to restrict network access to only compliant endpoints and (66) users. However, NAC is not a complete LAN (67) solution; additional proactive and (68) security measures must be implemented. Nevis is the first and only comprehensive LAN security solution that combines deep security processing of every packet at 10Gbps, ensuring a high level of security plus application availability and performance. Nevis integrates NAC as the first line of LAN security (69) . In addition to NAC, enterprises need to implement role-based network access control as well as critical proactive security measures—real-time, multilevel (70) inspection and microsecond threat containment.

（68）（）

A.constructive

B.reductive

C.reactive

D.productive
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