总体与总体单位,随着统计研究任务的变化出现互换()
参考答案:错
解析:本题考察总体与个体的关系,随着研究目的不同,总体和个体也会有所不同,但并非是互换关系。
Mobile computers-which (71) laptops, notebooks, subnotebooks and handhelds- (72) so ubiquitous in such a short time, no surprise to hear who say: "It will define the leading edge (73) the next five years or so." The most remarkable (74) mobile computers is the amount of data storage and memory packed (75) their tiny boxes. These devices not only handle windows easily but also run storage-hungry programs.
A.from
B.for
C.about
D.at
E.on
F.into
在编辑过程中为素材标记2个入点和1个出点,或者2个出点1个入点的操作方式,一般称之为()。