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【单选题】
创新的规则可以简要概括为()A.
运气和灵感
B.
专注工作和适当的休息
C.
模仿和学习
D.
创造全新的东西
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反馈参考答案：
举一反三
【多选题】单模光纤的缺点是芯线细,耦合光能量较小,接口时比较难,但其优点也较多,包括( )。
A.
传输设备较便宜，性价比较高
B.
模间色散很小，传输频带宽
C.
适用于远程通信
D.
可与光谱较宽的LED配合使用
【简答题】It was Mr. Hill’s birthday that day. He was one hundred years old and many people came to小题1: ( he ) birthday party. A reporter (记者) came to the party and asked him a few questions.“Many people want 小...
【简答题】Directions: Ther e are 20 blanks in the following passage. For each blank there are four choices marked A , B , C and D. You sh ould choose the ONE that bes t fits into the passage. Then mark the corr...
【简答题】2 Interestingly , ideas about the stages of life are changing. 3 In previous times, people didn't have a solid idea of childhood as being separate from hood . A hundred years ago, no one thought ...
【简答题】完形填空 Vitamins(维生素) are a discovery of the 20th century. A hundred years 1 , no one knew anything 2 them. The vitamins are 3 by letters of alphabet. Vitamin A 4 by the eyes. There is vitamin A in milk...
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