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【简答题】
People all over the world celebrate the new year. However, not al countries celebrate in the same way, in some countries, the new year doesn't begin on 1 date very year. In many countries, the new year begins on 1st January, but people start celebrating on 31st December, New Year's Eve. In New York many people go to celebrate in Times Square. 2 they're waiting for the New Year, they listen to music, sing traditional songs and have fun. Just before 12 o'clock, everyone 3 down from 10, 9, 8... As soon as it's 12 o'clock, everyone shouts very 4 , "Happy New Year!" New Year's Day is often a family day. Some families get together for a special meal. When the weather is fine, many families go out for a 5 . On New Year's Day, many people make resolutions for the new year. They 6 a list of things, such as "I will help out more with housework. I will work 7 at school than others. " or "I won't spend so much time playing video games." When they have made 8 list, they read it to their family or friends and promise to 9 their resolutions. So it doesn't matter how they celebrate, 10 people in countries all over the world, it's time to say goodbye to the old year, and to welcome the new.
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【单选题】普朗克假定能量在发射和吸收的时候,不是连续不断的,而是一份一份的,最小能量单位可以从普朗克方程E=h【图片】中可以推算出答案:,其中E是单个量子的能量,h称为普朗克常数,【图片】是
A.
频率
B.
波长
C.
光速
D.
质量
【单选题】细菌生长繁殖的主要方式是
A.
二分裂
B.
有丝分裂
C.
孢子生殖
D.
复制
E.
出芽
【多选题】以下说法哪些是合理的( )。
A.
载荷大应选低粘度润滑油
B.
速度低应选高粘度润滑油
C.
温度高时应选高粘度润滑油
D.
以上都不对
【单选题】细菌的繁殖主要方式是()
A.
二分裂
B.
有性繁殖
C.
芽殖
D.
复制
E.
寄生
【单选题】和谐型电力机车警惕装置动作,客型机车发出()指令。
A.
紧急制动
B.
常用制动
C.
卸载
【多选题】以下哪些说法是合理的
A.
对头孢菌素的3位进行结构改造可明显改变药物动力学的性质
B.
头孢菌素环中的硫原子改为氧原子后,活性下降
C.
β- 内酰胺抗生素的作用机理是抑制细菌细胞壁的合成
D.
在青霉素的侧链引入吸电子基团,具有耐酸活性
E.
在青霉素的侧链引入极性大的基团,可得到广谱抗生素
【判断题】一条线段长 100 米。
A.
正确
B.
错误
【判断题】S7-200 PLC的计数器用于累计输入端脉冲由低到高的次数。
A.
正确
B.
错误
【简答题】 请举1例你亲眼所见且认为是最有趣的生命现象,并谈谈你为 何觉得有趣?  要求: 1. 亲身经历,不能从网上下载或相互抄袭 2. 300字以上 3. 如有照片或图片更佳 4. 如能推测产生这种有趣生命现象的原因更佳 5. 同时请提供ppt,时间约5分钟,我们会从中选择一些同学上 台演讲
【单选题】普朗克假定能量在发射和吸收的时候,不是连续不断的,而是一份一份的,最小能量单位可以从普朗克方程【图片】可以推算出答案。 这里E是单个量子的能量,h称为普朗克常数,【图片】是
A.
频率
B.
波长
C.
光速
D.
质量
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