题目内容
采用冷拉方法调直钢筋时， I级钢筋的冷拉率不宜大于()。
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每道题先给出一段陈述，这段陈述被假设是正确的，不容置疑的，要求你根据这段陈述选择最相符合的选项。注意：正确的答案应与所给的陈述相符合，不需要任何附加说明即可以从陈述中直接推出。
一方面由手天气恶劣，另一方面由于主要的胡椒种植者转种高价位的可可，所以，三年以来，全世界的胡椒产量已经远远低于销售量了。因此，，目前胡椒的供应相当短缺。其结果是：胡椒价格上扬，已经和可可不相上下了。 据此可知()
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请从所给的四个选项中，选择最适合的一个填在问号处，使之呈现一定的规律性。
请从所给的四个选项中，选出最符合下边四个图形一致性规律的选项()
Part A
Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D . Mark your answers on ANSWER SHEET 1.
Revolutionary innovation is now occurring in all scientific and technological fields. This waveof unprecedented change is driven primarily by advances in information technology, but it is much larger in scope. We are not dealing simply with an Information Revolution but with a Technology Revolution.
To anticipate developments in this field, the George Washington University Forecast of Emerging Technologies was launched at the start of the 1990s. We have now completed four rounds of our Delphi survey — in 1990, 1992, 1994, and 1996 — giving us a wealth of data and experience. We now can offer a reasonably clear picture of what can be expected to happen in technology over the next three decades.
Time horizons play a crucial role in forecasting technology. Forecasts of the next five to ten years are often so predictable that they fall into the realm of market research, while those more than 30 or 40 years away are mostly speculation. This leaves a 10-to 20-year window in which to make useful forecasts. It is this time frame. that our Forecast addresses.
The Forecast uses diverse methods, including environmental scanning, trend analysis, Delphi surveys, and model building. Environmental scanning is used to identify emerging technologies. Trend analysis guides the selection of the most important technologies for further study, and a modified Delphi survey is used to obtain forecasts. Instead of using the traditional Delphi method of providing respondents with immediate feedback and requesting additional estimates in order to arrive at a consensus, we conduct another survey after an additional time period of about two years.
Finally, the results are portrayed in time periods to build models of unfolding technological change. By using multiple methods instead of relying on a single approach, the Forecast can produce more reliable, useful estimates.
For our latest survey conducted in 1996, we selected 85 emerging technologies representing the most crucial advances that can be foreseen. We then submitted the list of technologies to our panel of futurists for their judgments as to when (or if) each technological development would enter the mainstream, the probability that it would happen, and the estimated size of the economic market for it. In short, we sought a forecast as to when each emerging technology will have actually " emerged. "
What we are faced with at present can be best described as a revolution in
All the statements about the messages posted on Cancer Chat are true EXCEPT
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