在无线网络的攻击中()是指攻击节点在某一工作频段上不断发送无用信号,使该频段的其他节点无法进行正常工作。
A.拥塞攻击
B.信号干扰
C.网络窃听
D.篡改攻击
参考答案:A
--- Where did you get such a beautiful skirt?
--- It was at the department store ____ we used to shop.
A.that
B.there
C.where
D.which
双燃料控制系统有什么特点?