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【单选题】
在二进制指数后退算法中，N次碰撞之后，站点会在0 -（）之间选择一个随机数。A.
2^10-1
B.
2^15-1
C.
2^16-1
D.
上面都是错误的
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举一反三
【单选题】All of the following statements about corporations are true except _____.
A.
Corporations are generally more expensive to form than sole proprietorships
B.
The death of owner of a corporation does not terminate the company
C.
Any of the owners has the duty of hiring professional managers
【多选题】下列对玉米螟的描述正确的是( )。
A.
多食性害虫
B.
初孵幼虫啃食叶肉，留下表皮，俗称“花叶”
C.
钻蛀纵卷的心叶，心叶展开后，在叶片上形成整齐的横排圆孔，俗称“排孔”
D.
以老熟幼虫在寄主植物的茎秆、穗轴和根茬中越冬
【简答题】玉米螟俗称玉米钻心虫。属（）目、（）科，是世界性害虫。
【简答题】听下面一段材料，回答第1-3题。 1. What does the two speakers say about Professor Dickinson? A. His study is full of books. B. He often assigns too much reading homework. C. His lecture is very boring. 2. What was t...
【简答题】玉米螟俗称玉米钻心虫，是（）目害虫。
【单选题】Passage 2Directions: Read the following passages carefully. Each passage is followed by some questions or unfinished sentences. For each of them there are four choices marked A, B, C, and D. Choose th...
A.
Color is actually everywhere.
B.
Color is sometimes frightening.
C.
People find it difficult not to use colors.
D.
People have discovered all kinds of colors.
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