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【简答题】
Documentation of past weather conditions is limited: our main sources of knowledge of conditions in the distant past are (18) and (19) We can deduce that the Little Ice Age was a time of (20) rather than of consistent freezing. Within it there were some periods of very cold winters, others of (21) and heavy rain, and yet others that saw (22) with no rain at all.
A climatic shifts
B ice cores
C tree rings
D glaciers
E interactions
F weather observations
G heat waves
H storms
I written accounts
（22）处填入（）
Documentation of past weather conditions is limited: our main sources of knowledge of conditions in the distant past are (18) and (19) We can deduce that the Little Ice Age was a time of (20) rather than of consistent freezing. Within it there were some periods of very cold winters, others of (21) and heavy rain, and yet others that saw (22) with no rain at all.
A climatic shifts
B ice cores
C tree rings
D glaciers
E interactions
F weather observations
G heat waves
H storms
I written accounts
（22）处填入（）
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【单选题】A．在很多工程中，中标后签订的合同是需要备案的，该案例中，第一个合同已按规定进行了备案，第二个没有进行备案，给解决问题增添了难度 B．建筑公司违心签订的第二个合同修改了第一个合同的关键内容，其效力高于第一个合同 C．建筑公司与建设单位勾结修改了已经备案的第一个合同，已经造成违约，所以不受法律保护 D．第二个合同违反了《招标投标法》，属于无效合同，不存在效力高于第一个合同的问题
A.
2006年7月3日，某建筑公司作为中标的施工单位与建设单位签订了某施工合同，合同中约定的工程款为400万元，双方按照法律规定将此合同进行了备案。三天后，建设单位主要负责人邀请建筑公司负责人及项目经理见面，提出要再签订一个新的施工承包合同，将合同价改为350万元。由于建筑公司担心失去该施工任务，违心答应了这个要求。2007年8月30日，工程竣工，建筑公司要求按照第一个合同结算工程款，却遭到建设单位拒绝。建筑公司决定提出诉讼，但是却被告知：“你这个官司是输定了，因为你们已经签订了第二个合同，这个合同的效力高于第一个合同，也就是第二个合同修改了第一个合同”。建筑公司的负责人追悔莫及。
B.
以下关于此案例的说法中正确的是（）。
【单选题】某施工合同的合同工期为20个月，专用条款规定，承包人提前竣工或延误竣工均按月计算奖金和拖期违约赔偿金。施工至第16个月，因承包人投入的机械设备不足导致实际进度滞后，工程师要求承包人修改计划。承包人提交修改后的进度计划竣工时间为第22个月，工程师考虑该计划反映了承包人的实际能力，认可了修改的计划。承包人实际竣工时间为第21个月，则竣工结算时应按( )。
A.
延误1个月竣工赔偿
B.
提前1个月竣工奖励
C.
不追究延误竣工责任，也不给予奖励
D.
考虑工程师的认可作用，按延误0.5个月赔偿
【单选题】It can be inferred from the passage that（） A．in the future the chimpanzee can learn language like human beings B．in the past researchers taught a chimpanzee words of our natural language C．man and ani...
A.
Man finds living together with his own species(物种)difficult enough and living together with other species almost impossible. Our usual solution is to kill off anything that get in our way. Even on those rare occasions when we do enter into a relationship with another species, it is heavily biased(带有倾向)in our favor. The other species benefits only when it suits our own interests. Our attempts to communicate with another species are concerned mainly with giving orders in our own language and having them obeyed Probably our best attempt has been the whistle language that is used in the shepherd-sheepdog relationship. This is a system that is natural to neither species, but one that both can understand. Its only fault lies in fact that the bias is still there--the dog cannot whistle for the man.
B.
But now comes news of a piece of research that promises, for the first time, to open up two-way communication between man and another species.
C.
At the University of Nevada in the western United States, animated(活跃的)conversations are being held with a young female chimpanzee (黑猩猩)called Washoe. Allen and Beatrice Gardener have succeeded in doing this because they have used an entirely new approach, an approach based on the natural abilities of the chimpanzee. Past attempts to communicate with chimpanzees have failed because the researchers tried to make their animals use a vocal language.
【多选题】关于样本含量的确定，以下说法错误的是（）
A.
要求的容许误差越大，所需样本含量越小
B.
总体率(丌)越接近0.5，所需样本含量越小
C.
要求的a越大，所需样本含量越小
D.
整群抽样所需样本量比单纯随机抽样所需样本量小
E.
配对设计所需样本量比完全随机设计所需样本量小
相关题目：
【单选题】A．在很多工程中，中标后签订的合同是需要备案的，该案例中，第一个合同已按规定进行了备案，第二个没有进行备案，给解决问题增添了难度 B．建筑公司违心签订的第二个合同修改了第一个合同的关键内容，其效力高于第一个合同 C．建筑公司与建设单位勾结修改了已经备案的第一个合同，已经造成违约，所以不受法律保护 D．第二个合同违反了《招标投标法》，属于无效合同，不存在效力高于第一个合同的问题
A.
2006年7月3日，某建筑公司作为中标的施工单位与建设单位签订了某施工合同，合同中约定的工程款为400万元，双方按照法律规定将此合同进行了备案。三天后，建设单位主要负责人邀请建筑公司负责人及项目经理见面，提出要再签订一个新的施工承包合同，将合同价改为350万元。由于建筑公司担心失去该施工任务，违心答应了这个要求。2007年8月30日，工程竣工，建筑公司要求按照第一个合同结算工程款，却遭到建设单位拒绝。建筑公司决定提出诉讼，但是却被告知：“你这个官司是输定了，因为你们已经签订了第二个合同，这个合同的效力高于第一个合同，也就是第二个合同修改了第一个合同”。建筑公司的负责人追悔莫及。
B.
以下关于此案例的说法中正确的是（）。
【单选题】某施工合同的合同工期为20个月，专用条款规定，承包人提前竣工或延误竣工均按月计算奖金和拖期违约赔偿金。施工至第16个月，因承包人投入的机械设备不足导致实际进度滞后，工程师要求承包人修改计划。承包人提交修改后的进度计划竣工时间为第22个月，工程师考虑该计划反映了承包人的实际能力，认可了修改的计划。承包人实际竣工时间为第21个月，则竣工结算时应按( )。
A.
延误1个月竣工赔偿
B.
提前1个月竣工奖励
C.
不追究延误竣工责任，也不给予奖励
D.
考虑工程师的认可作用，按延误0.5个月赔偿
【单选题】It can be inferred from the passage that（） A．in the future the chimpanzee can learn language like human beings B．in the past researchers taught a chimpanzee words of our natural language C．man and ani...
A.
Man finds living together with his own species(物种)difficult enough and living together with other species almost impossible. Our usual solution is to kill off anything that get in our way. Even on those rare occasions when we do enter into a relationship with another species, it is heavily biased(带有倾向)in our favor. The other species benefits only when it suits our own interests. Our attempts to communicate with another species are concerned mainly with giving orders in our own language and having them obeyed Probably our best attempt has been the whistle language that is used in the shepherd-sheepdog relationship. This is a system that is natural to neither species, but one that both can understand. Its only fault lies in fact that the bias is still there--the dog cannot whistle for the man.
B.
But now comes news of a piece of research that promises, for the first time, to open up two-way communication between man and another species.
C.
At the University of Nevada in the western United States, animated(活跃的)conversations are being held with a young female chimpanzee (黑猩猩)called Washoe. Allen and Beatrice Gardener have succeeded in doing this because they have used an entirely new approach, an approach based on the natural abilities of the chimpanzee. Past attempts to communicate with chimpanzees have failed because the researchers tried to make their animals use a vocal language.
【多选题】关于样本含量的确定，以下说法错误的是（）
A.
要求的容许误差越大，所需样本含量越小
B.
总体率(丌)越接近0.5，所需样本含量越小
C.
要求的a越大，所需样本含量越小
D.
整群抽样所需样本量比单纯随机抽样所需样本量小
E.
配对设计所需样本量比完全随机设计所需样本量小
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