【单选题】The question _____ at tomorrow’s meeting is of great importance.
【单选题】The school's development committee has deliberated the question ______ great length.
【单选题】卡登格子是意大利数学家提出的一种信息隐藏技术,请问,它属于以下哪一类古典信息隐藏技术
【简答题】A great deal of research has been performed on this question, and results points to the following answer: we perform this task through a special type of averaging.
【判断题】由于热继电器在电动机控制线路中兼有短路和过载保护电路,故不需要再接入熔断器作短路保护。
【判断题】物联网技术可以划分为三个功能层包括:感知层、网络层和应用层。
【多选题】以下哪一种属于信息隐藏?
A.
在一个录音带的某些位置上加一些不易察觉的回声
D.
制作特殊的雕塑或绘画作品,使得从不同角度看会显出不同的印像
【单选题】详图索引符号为 , 圆圈内的3表示( )。
【单选题】The question ______ last night was of great importance.
【单选题】A great number of students _____ said they were forced to practise the piano. [ ]