【单选题】There are several different methods that can be used to create a forecast. The method a forecaster chooses depends upon the experience of the forecaster, the amount of information available to the for...
A.
Imagination of the forecaster.
B.
Necessary amount of information.
C.
Practical knowledge of the forecaster.
D.
Degree of difficulty involved in forecasting.
【单选题】There are several different methods that can be used to create a forecast. The method a forecaster chooses depends upon the experience of the forecaster, the amount of information available to the for...
A.
Imagination of the forecaster.
B.
Practical knowledge of the forecaster.
C.
Necessary amount of information.
D.
Degree of difficulty involved in forecasting.
【多选题】数字水印是信息隐藏的一个重要研究分支,下面关于数字水印的说法正确的是
D.
对鲁棒性要求比较高,对容量要求不高,水印有些可见,有些可不见
【单选题】关于钞票水印下列说法不正确的是()。
B.
钞票的水印只能象征性地印在纸张的表面或两张纸的中间
C.
只要掌握了识别真假水印的方法,就可以减少识别假钞的困惑
【单选题】我国专利法规定的发明专利保护期限为20年,自何时起算( )
【多选题】关于海啸说法正确的是( )
A.
智利、秘鲁、日本、印尼、夏威夷群岛等是全球海啸多发区
B.
海啸能量,约40%仍回到海中,60%消耗于岸上
C.
海底地震时,海底地层发生断裂,部分地层出现猛烈上升或下降,由此造成从海底到海面整个海水发生剧烈的“抖动”,形成海啸。
【单选题】根据新任务的要求,主动及时地把注意从一个对象转移到另一个对象上是指:
【单选题】授予发明专利保护期限15年,实用新型和外观设计保护期限10年,均自申请之日起计算。( )
【单选题】Computer(75)is a complex consisting of two or more connected computing units,it iS used for the purpose of data communication and resource Sharing.