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【简答题】
Every day when I enter the classroom, I will take a look at the wall beside my seat. You will find nothing special about this old wall if you just look at it. But for the students in my class, it is a special wall. Take a good look at it, and you will get to know the real feelings and thoughts of us, the 9th graders. In the middle of the wall, there is a big 'VICTORY'. It was written in pencil. I guess it must have been written by someone who got a good mark in an exam. A little higher above the formulas, there is a poem. It only has two sentences. It reads: All those sweet memories have disappeared. Like tears dropping in the heavy rain.           Oh! It must have been written at the end of the last semester in middle school. Classmates had to leave school and good friends had to part . What a sad poem! If you 'explore' the wall more carefully, you will find many other interesting things, like a crying face, or a happy face, and other patterns(图案). There are still some patterns and letters that I can't understand, but they all show the feeling of the students who drew them. For years, the wall has witnessed(目睹) all the things that have happened in the classroom. I don't know how it will be next year, two years from now, or even ten years from now. But I hope more smiling faces will be drawn on it. 小题1:There is ____ special on this wall. A.something B.anything C.nothing D.everything 小题2:What was the 'VICTORY' written in? A.Chalk B.Pencil C.Pen D.Brush 小题3:When has the poem been written? A.At the beginning of the last semester. B.At the end of the year. C.At the end of the last semester. D.At the beginning of the last month. 小题4:What's the meaning of the underlined word? A.部分 B.分离 C.和好 D.聚集 小题5:What's the title of the passage? A.The Pictures of the Wall B.The Feelings of the Students C.The Patterns of the Classroom D.The Hope of the Writer
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【单选题】形位公差的标注“符号”的用途
A.
选择形位公差的特征符号
B.
设置公差值
C.
添加直接符号
D.
添加附加符号
【简答题】国标中规定 : 形状和位置公差 ( 简称形位公差 ) 采用框格和符号表示法标注 。试分析 形位 公差的标注的优点。
【简答题】: 增色效应, 减色效应, 核酸分子杂交, 密码子, 反密码子 ,分子印迹技术 ;病毒,噬菌体; mRNA, tRNA, rRNA, Tm , cAMP, IMP, ATP, bp 中文名称及含义 ; I+G ( 食品工业常用的添加剂 ),
【单选题】如发动机转速升高时,经常发生烧坏用电设备情况,可能的原因是 ( ) 的故障。
A.
、转子总成
B.
、定子总成
C.
、整流器
D.
、电压调节器
【单选题】形位公差标注中,“符号”的用途?
A.
选择形位公差的特征符号
B.
设置公差值
C.
是否加直接符号
D.
添加附加符号
【简答题】食品添加剂的名词解释_____。
【单选题】Only then how much damage had been caused [     ]
A.
did she realize
B.
she realized
C.
had she realized
D.
she had realized
【简答题】国标规定: 在图样中形位公差的标注采用符号标注,当无法用符号标注时,也允许在技术要求中用相应的 ( )。
【简答题】名词 解释 : LD50 、 MNL 、 ADl 2 、 简述食品添加剂的基本要求 。
【判断题】数组可看成线性结构的一种推广,因此与线性表一样,可对它进行增删等操作。
A.
正确
B.
错误
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