题目内容
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[主观题]
The pyramid of energy shows the
A、Weight of organisms in an trophic level
B、Number of individuals in each trophic level
C、Energy in each trophic level
D、Biomass in each tropic level
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更多“The pyramid of energy shows th…”相关的问题
第1题
The Success of thiscal"shows the importance of good design in helping to sell the product． A．这种汽车的优点在于它精良的设计对于打开销路十分重要。 B．这种汽车的畅销表明精美的图案对于打开销路的重要性。 C．这种汽车的成功之处表明图案对于打开销路功不可没。 D．这种汽车的畅销表明精良的设计对于打开销路的重要性。
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第2题
The Building of the Pyramids
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The oldest stone buildings in the world are the pyramids.(46).There are over eighty of them scattered along the banks of the Nile, some of which are different in shape from the true pyramids. The most famous of these are the "Step" pyramid and the "Bent" pyramid.
Some of the pyramids still look much the same as they must have done when they were built thousands of years ago. Most of the damage suffered by the others has been at the hands of men who were looking for treasure or, more often, for stone to use in modern buildings.(47). These are good reasons why they can still be seen today, but perhaps the most important is that they were planned to last for ever.(48). However, there are no writings or pictures to show us how the Egyptians planned or built the pyramids themselves.(49). Nevertheless, by examining the actual pyramids and various tools which have been found, archaeologists have formed a fairly clear picture of them.
One thing is certain: there must have been months of careful planning before they could begin to build.(50). You may think this would have been easy with miles and miles of empty desert around, but a pyramid could not be built just anywhere. Certain rules had to be followed, and certain problems had to be overcome.
(46)
A The dry climate of Egypt has helped to preserve the pyramids, and their very shape have made them less likely to fall into ruin.
B It is practically certain that plans were made for the building of the pyramids because the plans of other large works have fortunately been preserved.
C The first thing they had to do was to choose a suitable place.
D Consequently, we are only able to guess at the methods used.
E Many people were killed while building the pyramids.
F They have stood for nearly 5,000 years, and it seems likely that they will continue to stand for thousands of years yet.
(47)
A The dry climate of Egypt has helped to preserve the pyramids, and their very shape have made them less likely to fall into ruin. B It is practically certain that plans were made for the building of the pyramids because the plans of other large works have fortunately been preserved. C The first thing they had to do was to choose a suitable place. D Consequently, we are only able to guess at the methods used. E Many people were killed while building the pyramids. F They have stood for nearly 5,000 years, and it seems likely that they will continue to stand for thousands of years yet.
(48)
A The dry climate of Egypt has helped to preserve the pyramids, and their very shape have made them less likely to fall into ruin. B It is practically certain that plans were made for the building of the pyramids because the plans of other large works have fortunately been preserved. C The first thing they had to do was to choose a suitable place. D Consequently, we are only able to guess at the methods used. E Many people were killed while building the pyramids. F They have stood for nearly 5,000 years, and it seems likely that they will continue to stand for thousands of years yet.
(49)
A The dry climate of Egypt has helped to preserve the pyramids, and their very shape have made them less likely to fall into ruin. B It is practically certain that plans were made for the building of the pyramids because the plans of other large works have fortunately been preserved. C The first thing they had to do was to choose a suitable place. D Consequently, we are only able to guess at the methods used. E Many people were killed while building the pyramids. F They have stood for nearly 5,000 years, and it seems likely that they will continue to stand for thousands of years yet.
(50)
A The dry climate of Egypt has helped to preserve the pyramids, and their very shape have made them less likely to fall into ruin. B It is practically certain that plans were made for the building of the pyramids because the plans of other large works have fortunately been preserved. C The first thing they had to do was to choose a suitable place. D Consequently, we are only able to guess at the methods used. E Many people were killed while building the pyramids. F They have stood for nearly 5,000 years, and it seems likely that they will continue to stand for thousands of years yet.
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第3题
Examine the data from the EMP table:The COMMISSION column shows the monthly commission earned by the employee.Which three tasks would require subqueries or joins in order to perform in a single step?（）
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A. Deleting the records of employees who do not earn commission.
B. Increasing the commission of employee 3 by the average commission earned in department 20.
C. Finding the number of employees who do NOT earn commission and are working for department 20.
D. Inserting into the table a new employee 10 who works for department 20 and earns a commission that is equal to the commission earned by employee 3.
E. Creating a table called COMMISSION that has the same structure and data as the columns EMP_ID and COMMISSIONS of the EMP table.
F. Decreasing the commission by 150 for the employees who are working in department 30 and earning a commission of more then 800.
第5题
The description of Congress's "giggle factor" (Para. 6) shows the writer's ______.
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A．appreciation.
B．disbelief.
C．excitement.
D．ridicule.
第6题
The story of Jason shows that although gossips are usually incredible, people tend to believe in the ______.
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第7题
The Safety Equipment Certificate shows that the vessel conforms to the standards of the ______.
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A.MSA
B.American Bureau of Shipping
C.American Salvage Association
D.SOLAS Convention
第8题
The Master or person in charge of a ship shall ensure the crane record book shows the ______．
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A.Date and description of each failure
B.Average load in pounds for each usage
C.Total number of lifts for each usage
D.All of the above
第9题
Which of the following shows the fight order of what Beckham experienced? a. Beckham played his first football league game. b. Beckham won the Bobby Charlton Soccer Skills award. c. Beckham played for Manchester United Youth Cup team. d. Beckham went to S
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A．e, d, a, c, b
B．b, e, d, a, c
C．e, b, a, d, c
D．b, d, e, c, a
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