解方程：①3x2=12x②2x2-5x+1=0 ③（x-1）2+4（x-1）+4 发布时间：2017-04-21 06:13 │ 来源：www.tikuol.com 题型：解答题 问题： 解方程：①3x2=12x ②2x2-5x+1=0 ③（x-1）2+4（x-1）+4=0 ④x2-（2a+1）x+2a=0（a为常数）
题型：解答题 男性，7岁，6h前由货车上跌下，伤后即有呼吸困难，并逐渐加重。入院查体：脉搏130/min，血压80/46mmHg，呼吸22/min，颜面发绀，吸气性呼吸困难，颈上胸部有皮下气肿，气管向左移位，右侧呼吸音消失。其诊断首先考虑（）A.多根多处肋骨骨折B.血胸C.血心包D.开放性气胸E.张力性气胸 查看答案
题型：解答题 完形填空 One afternoon I was sitting at my favorite table in a restaurant, waiting for the food I had ordered to arrive. Suddenly I 1 that a man sitting at a table near the window kept glancing in my direction, _ 2 he knew me. The man had a newspaper 3 in front of him, which he was 4 to read, but I could 5 that he was keeping an eye on me. When the waiter brought my 6 , the man was clearly puzzled by the 7 way in which the waiter and I 8 each other. He seemed even more puzzled as 9 went on and it became 10 that all the waiters in the restaurant knew me. Finally he got up and went into the 11 . When he came out, he paid his bill and 12 without another a glance in my direction. I called the owner of the restaurant and asked what the man had 13 . "Well, "he said, "That man was a detective(侦探). He 14 you here because he thought you were the man he 15 ." "What ?"I said, showing my 16 . The owner continued, "He came into the kitchen and showed me a photo of the wanted man. I 17 say he looked very much like you! Of course since we know you, we told him that he had made a __18_." "Well, it's really 19 I came to a restaurant where I'm known, "I said. " 20 , I might have been in trouble."( )1.A. knew ( )2.A. since( )3.A. flat ( )4.A. hoping ( )5.A. see( )6.A. menu ( )7.A .direct ( )8.A. chatted with ( )9.A. the waiter ( )10.A. true ( )11.A. restaurant ( )12.A. left ( )13.A. wanted ( )14.A. met( )15.A. was to beat( )16.A. care ( )17.A. must ( )18.A. discovery( )19.A. a pity ( )20.A. Thus B. unders tood B. even ifB. openB. thi nking B. find B. bill B. familiarB. looked at B. timeB. hopefulB. washroom B. acted B. triedB. caught B was dealing withB. surpriseB can B mistakeB naturalB HoweverC. noticed C .thoughC. cutC. pretendingC. guessC. paperC. strange C. laughed atC. I C .clearC. office C. sat down C. orderedC. followed C. was to meet C. worryC. need C decisionC. a chanceC.OtherwiseD.recognized D.as ifD. fixed D.continuing D. learnD. food D. funny D. talked aboutD. the dinner D. possible D .kitchen D. calmeddown D. wishedD. discoveredD. was looking for D. regretD. may D. fortuneD. lucky D. Therefore 查看答案
题型：解答题 患者，女性，初产妇，28岁，胎位LOT，分娩时宫口开全1小时50分钟，先露S+3，宫缩强度减弱，宫缩间歇时间由2分钟延长为5分钟，考虑为第二产程延长。最常见的原因考虑为（）A.胎儿过大B.宫缩乏力C.骨盆出口狭窄D.中骨盆平面狭窄E.产妇衰竭 查看答案