题目内容

下列______不属于网络安全技术研究的主要问题。

A. 安全存储
B. 安全攻击
C. 安全机制
D. 安全服务

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The industrial community should be close enough to the crowded centers but distant enough to reduce ______ hazards.

A. potential
B. substantial
C. feasible
D. predictable

一个好的模式设计应符合______原则。

A. 表达性
B. 分离性
C. 最小冗余性
D. 以上三条

You are allowed to ______ in the fast lane on a motorway.

A. overtake
B. overthrow
C. overturn
D. overrun

We always lay in a large ______ of tinned food in winter in case we are snowed up.

A. proportion
B. storage
C. provision
D. supply