www.sogou.com是哪个公司的搜索引擎站点()
A.搜狐
B.网易
C.腾讯
D.微软
参考答案:A
小题1:Huanan Tigers are one of _____(濒临灭绝的) animals.
小题2:To my great _____(高兴),I have passed the final examination.
小题3:What's up? There's such a loud (噪音) in the room.
小题4: There is a __________ (职业) player on their team.
小题5:People are much________ (富有) than ten years ago.
彩色多普勒血流成像下述哪一种性能是正确的?
A、能显示平均速度为零的灌注区的血流
B、血流成像对入射角度的相对非依赖性
C、不受血流速度的影响,不会发生血流信号的混叠
D、彩色多普勒成像无法显示血流速度的快慢
E、彩色多普勒成像能显示血流方向