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听力原文：M: So you don't like very much about London. W: Oh. I do. I love the people they are so friendly. And I like the television programs there they are very interesting. However, I don't like the weather. M: The weather? W: Yes, the spring is always so wet, which really annoys me. M: Oh. W: And the fog. I' ye lost my way for several times to the heavy fog. M: That's a problem. How about other season in London? W: Well, in summer and autumn, London is a nice place to stay. It's very cool. M: How about in winter? W: In winter, London is very cold. But it's a good chance to enjoy the view of snow. 6. What does the woman think about London? (15)A.
She likes everything in London.
B.
She likes many things in London except its weather.
C.
She doesn't like the place at all.
D.
She likes the weather in London best.
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【单选题】1820年4月的一天,丹麦科学家奥斯特在上课时,无意中让通电导线靠近小磁针,突然发现小磁针偏转.这个现象并没有引起在场其他人的注意,而奥斯特却是个有心人,他非常兴奋,紧紧抓住这个现象,接连三个月深入地研究,反复做了几十次实验.关于奥斯特的实验,如图所示,下列操作中一定能够观察到小磁针偏转的是( )
A.
通电导线AB东西放置，小磁针放在导线正下方，闭合开关
B.
通电导线AB南北放置，小磁针放在导线正下方，闭合开关
C.
通电导线AB东西放置，小磁针放在导线正下方，改变电流方向
D.
通电导线AB南北放置，小磁针在AB延长线的B端外侧，改变电流大小
【单选题】下列 switch 多分支语句格式中缺少的是:( ) switch (表达式) {case 常量表达式 ; 语句 n; ; defaul; 语句 n+1; }
A.
countinue
B.
break
C.
goto
D.
Console.WriteLine()
【简答题】混合操作的目的是A.使大块物料成为小块物料B.去除大颗粒,获得小颗粒C.使各成分的含量均匀一致D.使物料分装均匀A. 1 B. 1 C. 1 D. 1
【简答题】简述混合的目的及混合操作在制剂生产中的意义
【简答题】吸收操作的目的是分离 A.液体均相混合物 B.气液混合物 C.气体混合物 D.部分互溶的液体混合物
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