彩色多普勒血流显像显示胎儿正常脐带内的三条血管是:A.一条脐动脉和二条脐静脉 B. 发布时间:2017-06-25 15:30 │ 来源:www.tikuol.com 题型:单项选择题 问题: 彩色多普勒血流显像显示胎儿正常脐带内的三条血管是:A.一条脐动脉和二条脐静脉 B.二条脐动脉和一条脐静脉 C.肝静脉、门静脉和脐静脉 D.肝动脉、门静脉和脐动脉 E.肝动脉、脐静脉和脐动脉
题型:单项选择题 根据上下文补全对话A: Kate, what are you 1 ?B: I'm reading today's newspaper. What's 2 ?A: May I borrow your VCD player?B: 3 how long?A: Until the end of the week.B: Yes, I guess that it would be all right.A: Thank you very much. 4 do you have any new discs?B: Yes, I've just got three new pop music discs. I'll 5 them to you with the machine tomorrow.A: That's great. Thanks. I'll give them back to you soon.1. _____ 2. _____ 3. _____ 4. _____ 5. _____ 查看答案
题型:单项选择题 关于物体的物理状态,下列说法正确的是( )A.体操运动员双手握住单杠吊在空中不动时处于平衡状态B.蹦床运动员在空中上升到最高点时处于静止状态C.举重运动员在举起杠铃后不动的那段时间内处于超重状态D.跳水运动员在跳台与水面之间运动时处于失重状态 查看答案