网络知识权力结构的（）是指，当网络已经成为市场经济的基础框架时，网络效应会引起需求方 发布时间：2018-09-03 05:36 │ 来源：www.tikuol.com 题型：单项选择题 问题： 网络知识权力结构的（）是指，当网络已经成为市场经济的基础框架时，网络效应会引起需求方出现规模经济。A.技术循环B.市场循环C.利益群体D.市场结构
题型：单项选择题 完形填空。 Look here, please! Can you see the man in black? 1 is Mr Lee, my English teacher. He teaches (教) us 2 . He is a very good teacher. 3 is he? He's forty-five. He is 4 America. He has a small yellow car. It's beautiful. It's 5 the tall building now. He goes to 6 by car every day. He leaves (离开) home at 7:00 a.m. and gets home at 5:00 p.m. Tom and Tim are his twin sons. 7 are not in our school. They are in No.1 Middle School. They are in 8 . They go to school early every morning. They are both good 9 . They are good at English. But they can't speak Chinese. Today they are not 10 school, because it is Sunday. ( ) 1. A. He ( ) 2. A. classes ( ) 3. A. What ( ) 4. A. in ( ) 5. A. under ( ) 6. A. home ( ) 7. A. He ( ) 8. A. Class five ( ) 9. A. students ( ) 10. A. to B. She B. English B. How B. from B. on B. work B. They B. class five B. classes B. at C. This C. Chinese C. How old C. of C. behind C. working C. We C. Class Five C. girls C. for 查看答案
题型：单项选择题 利巴韦林的化学名（）.A．（2R，2’R）-（+）-2，2’-（1，2-乙二基二亚氨基）-双-1-丁醇 B．4-吡啶甲酰肼 C．1-环丙基-6-氟-1，4-二氢-4-氧代-7-（1-哌嗪基）-3-喹啉羧酸盐酸盐一水合物 D．9-（2-羟乙氧甲基）鸟嘌呤 E．1-9-D-呋喃核糖基-1H-1，2，4-三氮唑-3-羧酰胺 查看答案
题型：单项选择题 男性，26岁。持续性腰痛1年余，伴有活动受限及晨僵，活动后减轻，近半年膝关节疼痛就诊。体检：患者身体前弯，后仰，侧弯均受限，化验：RF（一）。首先考虑的诊断是（）A.系统性红斑狼疮B.类风湿关节炎C.骨关节炎D.幼年性类风湿关节炎E.强直性脊柱炎 查看答案
题型：单项选择题 依据增值税的有关规定，下列销售行为免征增值税的是( )。A．农业生产者销售外购的农业产品B．国有粮食购销企业销售的食用植物油C．农贸市场批发和零售的农膜D．商场销售的水产品罐头 查看答案