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【简答题】
画一棵权为3 , 4,5,6,7,8,9 的最优二叉树,并计算出它的权。
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【简答题】A 企业是重庆某新鲜蔬果生产基地,B公司是重庆某货物配送中心。2008年1月份,A企业为了集中力量发展核心竞争力,A企业决定把物流外包出去。所以,A企业与B公司订立了为期1年的配送服务合同,合同约定:配送中心按重庆市各大超市的要求对蔬菜进行拣选、加工、包装等作业后,在指定的时间送至各大超市,配送费月付。在合同履行过程中,先后出现了以下情况:4月15日,重百超市检查配送的蔬菜时发现了漏送的品种;7月...
【单选题】What is required of Al software to save a life?
A.
It must be able to swim.
B.
It must keep walking round the pool.
C.
It must distinguish between a swimmer and a shadow.
D.
It must save a life within a few months.
【简答题】A.Because she feels very hot in the room. B.Because she wants to avoid meeting people. C.Because she wants to smoke a cigarette outside. D.Because she doesn't like the smell of smoke inside.
【判断题】简单随机抽样是随机抽样中最简单、最基本的方法,是其他随机抽样方法的基础。
A.
正确
B.
错误
【简答题】All her life,my mother wanted busy children.It was very important that her house should remain at all times clean and tidy. You could turn your back for a moment in my mother’s house,leave a half-writ...
【简答题】A few years ago, my friend Al won the lottery (彩票), which changed his life. He was not born with a silver spoon in his mouth. 1 , my friend was always hard up for cash. He did not have much money. And...
【判断题】Unit 1 reading three Al used to live a fulfilling life.
A.
正确
B.
错误
【单选题】水体富营养化的后果是()。
A.
由于藻类大量繁殖,使鱼类的食物增加,导致渔业产量增加
B.
由于藻类大量繁殖,死后分解要消耗大量氧气,导致渔类因缺氧而死亡,使渔业产量减少
C.
对渔业产量没有影响D.使渔业产量忽高忽低
【单选题】( )是最简单最基本的随机抽样方法。
A.
分层随机抽样
B.
等距随机抽样
C.
整群随机抽样
D.
简单随机抽样
【简答题】A.Because she feels very hot in the room. B.Because she wants to avoid meeting people. C.Because she wants to smoke a cigarette outside. D.Because she doesn't like the smell of smoke inside.
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