关于骨纤维结构不良的X线表现,哪项除外() A.骨性狮面 B.单房或多房性囊状透 发布时间:2017-06-05 18:02 │ 来源:www.tikuol.com 题型:单项选择题 问题: 关于骨纤维结构不良的X线表现,哪项除外()A.骨性狮面 B.单房或多房性囊状透光区 C.囊内有磨砂玻璃样钙化 D.胫骨囊性病变周围常有骨硬化 E.囊性病变见于颅面骨
题型:单项选择题 从方框中选择恰当的句子补全对话A. Hamburgers and salad are my favorite.B. Miss Wang. She is a good teacher.C. I want to be a ping-pong player like Ma Lin and Wang Hao.D. Why do you like them?E. Where do you study?A: Hi, Bob! (1)_____B: I study in No.1 Middle School.A: Who is your English teacher?B: (2)_____A: What s your favorite subject?B: English and math.A: (3)_____B: Because they are interesting and exciting.A: Do you like sports?B: Yes. My favorite sport is ping-pong. (4)_____ They play ping-pong so well.A: What's your favorite food?B: (5)_____A: Thanks a lot.B: You are welcome. 查看答案
题型:单项选择题 如图所示,长12m质量为50kg的木板右端有一立柱.木板置于水平地面上,木板与地面间的动摩擦因数为0.1,质量为50kg的人立于木板左端,木板与人均静止,当人以4m/s2的加速度匀加速向右奔跑至板的右端时,立刻抱住立柱,取(g=10m/s)试求:(1)人在奔跑过程中受到的摩擦力的大小.(2)人在奔跑过程中木板的加速度.(3)人从开始奔跑至到达木板右端所经历的时间. 查看答案