A.FLVB.AVIC.WMVD.WAV下列（）不是视频文件格式。……

单项选择题设某交通信号灯红、绿、黄三种颜色的持续时间分别为40秒、60秒、20秒，循环往复。则“绿灯亮”携带的信息量是（）比特。

A.5
B.1
C.2
D.6

未分类题The authors attitude towards mixing of cultures is one of______.A．unrestricted enthusiasmB．eager advocacyC．genuine concernD．satisfied approval

未分类题Which group in the study had misconceptions about the body size of their peers?A．Female college students.B．Female students at co-ed schools.C．Female students at all-female schools.D．Female students at primarily male schools.

未分类题According to Sandersons research, who is more likely to have an eating disorder?A．A woman who lacks a serious exercise regimen.B．A woman who incorrectly believes her peers are thinner than she is.C．A woman who does not attend a co-educational institution.D．A woman whose family has a history of eating disorders.

未分类题It can be learned from the text that technological change______.A．makes life more convenient for all peopleB．keeps children from kicking a ball around in the parkC．can lead to the invasion of a person's home lifeD．particularly affects the lives of working people