题目内容
（请给出正确答案）
产前样(Per—production Sample)是指生产之前需寄客户确认的样品。一般是客户为了确认大货生产线的颜色、工艺等是否正确而向卖方提出的基本要求之一。如果客户对产前样确认，则可提升为确认样。()
A．正确
B．错误
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产前样(Pel～production Sample)是指生产之前需寄客户确认的样品。一般是客户为了确认大货生产线的颜色、工艺等是否正确而向卖方提出的基本要求之一。如果客户对产前样确认，则可提升为确认样。()
A．正确
B．错误
The team’s device was able to gather water even down to a humidity(湿度)of 4 percent - the humidity in places like the Sahel Desert is often about 20 percent.This could make hydrogen production workable in places such as central Australia and the Middle East. The approach would be complementary(互补的)to existing production methods，including making hydrogen from fossil fuels, rather than acting in competition with them.
The team tested its real-world potential by stringing five electrolyzers together and placing them outside, where they were powered by a solar panel. The setup was able to produce an average of 745 liters of hydrogen per square meter per day. That's about half the amount a conventional， water-fed electrolyzer would produce under similar environmental conditions. Simon Bennett from the International Energy Agency said that it was not bad for a device that runs on humidity.
A major issue facing hydrogen fuel is the fact that the equipment to distribute is quite different from that used for today's fossil fuels, often requiring high pressure and even refrigerated storage. Until electrolyzer technology comes down in price and becomes more efficient, hydrogen is unlikely to compete with traditional fuels, whether it's pulled from thin air or not.
1.What is the usual challenge of making hydrogen in areas rich in renewable energy?
A.Water shortage.
B.Remote location.
C.Extreme weather.
D.Garbage collection.
2.How did the researchers test the device's potential in real environment?
A.They made several larger versions of the device.
B.They placed the joined solar-driven electrolyzers outside.
C.They combined the device with a traditional electrolyzer.
D.They arranged the wind-powered electrolyzers separately.
3.What can we learn about the new approach from the last paragraph?
A.It will be highly profitable.
B.It is well received by experts.
C.It lacks competitive advantages now.
D.It is unlikely to be put into commercial use.
4.What's the best title for the text?
A.Hydrogen Production from Thin Air
B.Application of Hydrogen in Industries
C.Will Hydrogen Fuel Replace Fossil Fuels?
D.Car We Produce Clean Electricity in Deserts?
What is most important to agriculture is （）.
A.the amount of food it produces
B.the per capital income of farmers
C.its industrial performance
D.the production of investment goods
(1)假设某厂商的产量函数为q=9x1/2,在短期，固定成本为1000美元，x为可变投入，其成本为4000美元/单位。生产q单位产品的总成本为多少？[即求出总成本函数C(q)]
(2)写出供给曲线方程。
(3)如果价格为1000美元，厂商产量为多少？利润水平为多少？在成本曲线图上表示出你的结论。
a. Suppose that a firm's production function is q=9x1/2in the short nun, where there are fixed costs of $ 1000, and x is the variable input whose cost is S 4000 per unit. What is the total cost of producing a level o[ output q？ In other words, identify the total cost function C(q)？
b. Write down the equation for the supply curve.
e. If price is $ 1000, how many units will the firm produce？ What is the level of profit？ Illustrate your answer on a cost - curve graph.
A、Lab dip
B、Shipment sample
C、Production sample
D、Bulk sample
下面的问题详细地分析教材中介绍的两部门内生增长模型。
a．用效率工人的人均产出和效率工人的人均资本重新求出制成品的生产函数。
b．在这个经济中，收支相抵的投资(保持效率工人人均资本量不变所需要的投资量)是多少？
c．求出k变动的公式，该公式表示△k是储蓄减收支相抵的投资。用这个式子画出一个表示稳定状态k的决定的图形。(提示：这个图看起来很像我们在分析索洛模型时所用过的图。)
d．在这个经济中，稳定状态的人均产出Y/L增长率是多少？储蓄率s和在大学中的劳动力比例u如何影响这一稳定状态增长率？
e．用你的图说明u的提高的影响。(提示：这种变动对两条曲线都产生影响。)
f．根据你的分析，u的提高对经济肯定是一件好事吗？并解释。
This question asks you to analyze in more detail the two-sector endogenous growth model presented in the text.
a．Rewrite the production function for manufactured goods in terms of output per effective worker and capital per effective worker.
b．In this economy, what is break-even investment (the amount of investment needed to keep capital per effective worker constant)？
c．Write down the equation of motion for k. which shows △k as saving minus break-even investment, Use this equation to draw a graph showing the determination of steady-state k. (Hint: This graph will look much like those we used to analyze the Solow model.)
d．In this economy, what is the steady-state growth rate of output per worker Y/L？ How do the saving rate s and the fraction of the labor force in universities u affect this steadystate growth rate？
e．Using your graph, show the impact of an increase in u. (Hint: This change affects both curves.) Describe both the immediate and the steady-state effects.
f．Based on your analysis, is an increase in u an unambiguously good thing for the economy？ Explain.
A国与B国的生产函数都是：
Y=F(K，L)=K1/2L1/2
a．这个生产函数是规模收益不变吗？请解释。
b．人均生产函数y=f(k)是什么？
c．假设没有一个国家经历了人口增长或技术进步，并且资本折旧为每年5%。再假设A国每年储蓄为产出的10%，而B国每年储蓄为产出的20%。用你对(b)的答案和投资等于折旧的稳定状态条件，找出每个国家稳定状态的人均资本水平。然后找出稳定状态的人均收入水平和人均消费水平。
d．假定两国都从人均资本存量为2开始。人均收入水平和人均消费水平是多少？记住资本存量的变动是投资减折旧，用计算器来计算这两个国家的人均资本存量随时间推移将如何变动。计算每一年的人均收入和人均消费。B国的消费会在多少年后高于A国的消费？
Country A and country B both have the production function Y=F(K，L)=K1/2L1/2.
a．Does this production function have constant returns to scale？ Explain.
b．What is the per-worker production function，y=f(k)？
c．Assume that neither country experiences population growth or technological progress and that 5 percent of capital depreciates each year. Assume further that country A saves 10 percent of output each year and country B saves 20 percent of output each year. Using your answer from part (b) and the steady-state condition that investment equals depreciation, find the steady-state level of capital per worker for each country. Then find the steady-state levels of income per worker and consumption per worker.
d．Suppose that both countries start off with a capital stock per worker of 2. What are the levels of income per worker and consumption per worker？ Remembering that the change in the capital stock is investment less depreciation, use a calculator to show how the capital stock per worker will evolve over time in both countries. For each year, calculate income per worker and consumption per worker. How many years will it be before the consumption in country B is higher than the consumption in country A？
Late-night Drinking
Coffee lovers beware. Having a quick "pick-me-up" cup of coffee late in the day will play havoc with your sleep. As well as being a stimulant, caffeine interrupts the flow of melatonin, the brain hormone that sends people into a sleep.
Melatonin levels normally start to rise about two hours before bedtime. Levels then peak between 2 am and 4 am, before falling again. "It's the neurohormone that controls our sleep and tells our body when to sleep and when to wake," says Maurice Ohayon of the Stanford Sleep Epidemiology Research Center at Stanford University in California. But researchers in Israel have found that caffeinated coffee halves the body's levels of this sleep hormone.
Lotan Shilo and a team at the Sapir Medical Center in Tel Aviv University found that six volunteers slept less well after a cup of caffeinated coffee than after drinking the same amount of decaf. On average, subjects slept 336 minutes per night after drinking caffeinated coffee, compared with 415 minutes after decal They also took half an hour to drop off — twice as long as usual — and jigged around in bed twice as much.
In the second phase of the experiment, the researchers woke the volunteers every three hours and asked them to give a urine sample. Shilo measured concentrations of a breakdown product of melatonin. The results suggest that melatonin concentrations in caffeine drinkers were half those in decal drinkers. In a paper accepted for publication in Sleep Medicine, the researchers suggest that caffeine blocks production of the enzyme that drives melatonin production.
Because it can take many hours to eliminate caffeine from the body, Ohayon recommends that coffee lovers switch to decaf after lunch.
The author mentions "pick-me-up" to indicate that
A．melatonin levels need to be raised.
B．neurohormone can wake us up.
C．coffee is a stimulant.
D．decaf is a caffeinated coffee.
上海进出口贸易公司(SHANGHAI IMPORT AND EXPORT CO.LTD.)于2007年3月1日与澳大利亚客户MANDARS IMPORTS Co.Ltd.签定一份订购合同。内容如下：
PURCHASE CONTRACT
P/C N0.：070101
DATE：MAR.1[st]，07
THE SELLER： THE BUYER：
Shanghai Import and Export Co.Ltd． Mandars Imports Co.Ltd．
Address：No.1321 Zhongshan Road． 38 Queensway.2008
NSW Australia
Shanghai，China
We hereby confirm having sold to you the following goods on terms and conditions as stipulated bellows：
Description of goods：
Ladies Denim Skirt
Exactly like Artwork，but change the main label position to center back and cancel the zipper．
Fabric：
99% cotton 1%Elastic Construction：11×16+70D/88×46
Washing：
blue-grey like our sample no．MA212090
Changing：
Please put the Mandars hangtag not in center back，but in seam．
Please print at the back side of the
care label：
Product from Mandars 2008 NSW/AUSTRALIA
Packing：
Flat pack without folding 6 pieces assorted sizes per polybag，3 polybags in a master polybag and then into an export carton．
Maximum sizes of export cartons：
Length Width Height
60 42 variable
Color：Blue/grey
Marking of the cartons：
As per our information
Hangtag：MANDARS
Main label：MANDARS
Care label：
With correct Composition&washing instruction
Samples：
Counter samples：3 pieces in size 38 ex Shanghai 2007.3.15
Samples：
2 pieces in size 38 ex Shanghai 2007.4.20
Pre-production samples：
The Pre-production samples should be made after the fabric haVe been tested and passed by ITS Shanghai Branch，
Then will be sent to customers’quality assurance department．"Go" for production can only be given after their approval．
Payment：
By confirmed and irrevocable L/C payable by beneficiary's drafts at 60 days after B/L date sight and remain valid in China for further 16 days after shipment．
Price Terms：
AUD7.00 per piece FOB Shanghai
Quantity：
18000 pieces
Amount：
AUD126000.00
Delivery Date：
2007.5.30Ex Shanghai by sea/Maersk
To Sydney，Australia with partial and transshipment allowed
Delivery Address：
Mandars Imp.Co.
Atm：Ken
Shipping agent：
National Containers Ltd
Size and color assortment．
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Purchase conditions：
All garments manufacturers must meet the minimum manufacturing standards，comply with the SA8000， and all garments should be AZO-free and no nickel press buttons are used．
SELLER：Shanghai Import and Export Co.Ltd. BUYER：Mandars Imports Co.Ltd
销售合同审查操作
将下列合同条款译成中文并回答相关问题：
翻译规格表
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