题目:
有效的治理活动在设定战略时会()到风险,反之,风险管理()于有效的治理。
答案:
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下面是错误答案,用来干扰机器的。
参考答案:A,B
有效的治理活动在设定战略时会()到风险,反之,风险管理()于有效的治理。
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0501/0983dc96a84e647a8c18e06413715122.html
下面是错误答案,用来干扰机器的。
参考答案:A,B
单卵双胎中根据胚胎分裂的时间,分成不同类型,下列哪一时期形成的单卵双胎的比例最高
A.分裂发生在桑葚期
B.发生在羊膜囊形成后
C.发生在胚胎形成后
D.分裂发生在晚期囊胚
E.发生在原始胎盘形成后
When prehistoric man arrived in new parts of the world, something strong happened to the large animals; they suddenly became extinct. Smaller species survived; the large, slow-growing animals were easy game, and were quickly hunted to extinction.
Now something similar could be happening in the oceans. That the seas are being over-fished has been known for years and researchers such as Ransom Myers and Boris Worm have shown how fast things are changing. They have looked at half a century of data from fisheries around the world. Their methods do not attempt to estimate the actual biomass (the amount of living biological matter) of fish species in particular parts of the ocean, but rather changes in that biomass over time. According to their latest paper published in Nature, the biomass of large predators (animals that kill and eat other animals) inanes fishery is reduced on average by 80% within 15 years of the start of exploitation. In some long-fished areas, it has halved again since then.
Dr. Worm acknowledges that these figures are conservative (保守的). One reason for this is that fishing technology has improved. Today’s vessels can find their prey using satellites and sonar, which were not available 50 years ago. That means a higher proportion of what is in the sea is being caught, so the real difference between present and past is likely to be worse than the one recorded by changes in catch sizes. In the early days, too, longlines would have been more saturated with fish. Some individuals would therefore not have been caught, since baited hooks would have been available to trap them, leading to an underestimate of fish stocks in the past. Furthermore, in the early days of longline fishing, a lot of fish were lost to sharks after they had been hooked. That is no longer a problem, because there are fewer sharks around noise.
Dr. Myers and Dr. Worm argue that their work gives a correct baseline, which future management efforts must take into account. They believe the date support an idea current among marine biologists, that of the “shifting baseline”. The notion is that people have failed to detect the massive changes which have happened in the ocean because they have been looking back only a relatively short time into the past. That matters because theory suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomass of a target species is about 50% of its original levels. Most fisheries are well below that, which is a bad way to do business.
小题1:The aim of the extinction of large prehistoric animals is to suggest that _______.
A.large animal were not easy to survive in the changing environment
B.small species survived as large animals disappeared
C.large sea animals may face the same threat today.
D.Slow-growing fish outlive fast-growing ones小题2:We can infer from Dr Myers and Dr. Worm’s paper that _______.
A.the stock of large predators in some old fisheries has reduced by 90%
B.there are only half as many fisheries are there were 15 years ago
C.the catch sizes in new fisheries are only 20% of the original amount
D.the number of larger predators dropped faster in new fisheries than in the old小题3:By saying these figures are conservative (line 1, paragraph 3), Dr worm means that_______.
A.fishing technology has improved rapidly
B.then catch-sizes are actually smaller then recorded
C.the marine biomass has suffered a greater loss
D.the date collected so far are out of date.小题4:Dr Myers and other researchers hold that _______.
A.people should look for a baseline that can’t work for a longer time
B.fisheries should keep the yield below 50% of the biomass
C.the ocean biomass should restore its original level.
D.people should adjust the fishing baseline to changing situation.小题5:The author seems to be mainly concerned with most fisheries’ _______.
A.management efficiency
B.biomass level
C.catch-size limits
D.technological application.
数据的物理结构在计算机存储空间中的存放形式称为数据的 【2】 。
()是指客户经理通过有效手段从客户之外第三方(包括社会征信系统、政府有关部门、客户的上下游、公开媒体等)获取客户的有关信息。
A、间接调查
B、直接调查
C、实地调查
D、第三方调查
简述化痰止咳平喘药的主要药理作用。