衡量人眼对光刺激时间分辨能力的指标是:()
A. 视敏度
B. 视速度
C. 临界闪烁频率
D. 最大闪烁频率
A.视杆细胞多,单线联系
B.视杆细胞多,聚合联系
C.全是视椎细胞,单线联系
D.全是视椎细胞,聚合联系
E.视杆视椎细胞均均匀分布,且为单线联系
在Visual FoxPro中,关于视图的正确叙述是
A.视图与数据库表相同,用来存储数据
B.视图不能同数据库表进行连接操作
C.在视图上不能进行更新操作
D.视图是从一个或多个数据库表导出的虚拟表
A.VDT(visual display terminal)综合征是指视频终端综合征
B.由于长时间过度注视荧光屏出现调节和集合功能异常的视疲劳综合征
C.儿童长时间接触电子产品,不仅眼部出现不适,还有伴随眩晕、记忆力减退、睡眠障碍等全身症状
D.合理的建议包括远离电子产品、增加户外运动
Words are tools for communicating with other people, especially information about people. They are mainly social tools. Visual and spatial abilities are good for imagining and manipulating objects and for communicating information about them. Are these talents programmed into the brain? In some of the newest and most controversial research in neurophysiology(神经生理学), it has been suggested that when it comes to the brain, males are specialists while women are generalists.
But one knows that, if anything, this means in terms of the abilities of the two sexes. Engineering is both Visual and spatial, and it's true that there are relatively few women engineers. But women become just as skilled as men at shooting a rifle or driving a car, task that involve visual-spatial skills. They also do equally well at programming a computer, which is neither visual nor spatial. Women do, however, seem less likely to fall in love with the objects themselves. We all know men for whom machines seem to be extensions of their identity. A woman is more likely to see her car, rifle, or computer as a useful tool but not in itself fascinating.
According to the massage, women are usually good at______.
A.body language
B.logical reasoning
C.tasks demanding for the use of words
D.both A and B