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【单选题】
The Rising Oil Price Could the bad old days of economic decline be about to return? Since OPEC agreed to supply-cuts in March, the price of crude oil has jumped to almost $ 26 a barrel, up from less than $10 last December. This near-tripling of oil prices calls up scary memories of the 1973 oil shocks resulted in double-digit inflation and global economic decline. So where are the headlines warning of gloom and doom this time? The oil price was given another push up this week when Iraq suspended oil exports. Strengthening economic growth, at the dame time as winter grips the northern hemisphere, could push the price higher still in the short term. Yet there are good reasons to expect the economic consequences now to be less severe than in the 1970s. In most countries the cost of crude oil now accounts for a smaller share of the price of petrol than it did in the 1970s. In Europe, taxes account for up to four-fifths of the retail price, so even quite big changes in the price of crude have a more muted effect on pump prices than in the past. Rich economics are also less dependent on oil than they were, and so less sensitive to swings in the oil price. Energy conservation, a shift to other fuels and a decline in the importance of heavy, energy-intensive industries have reduced oil consumption. Software, consultancy and mobile telephones use far less oil than steel or car production. For each dollar of GDP (in constant prices) rich economics now use nearly 50% less oil than in 1973. The OECD estimates in its latest Economic Outlook that, if oil prices averaged $ 22 a barrel for a full year, compared with $13 in 1998, this would increase the oil import bill in rich economies by only 0.25%~0.5% of GDP. That is less than one-quarter of the income loss in 1974 or 1980. On the other hand, oil-importing emerging economies—to which heavy industry has shifted— have become more energy-intensive, and so could be more seriously squeezed. One more reason not to lose sleep over the rise in oil prices is that, unlike the rises in the 1970s, it has not occurred against the background of general commodity-price inflation and global excess demand. A sizable portion of the world is only just emerging from economic decline. The Economist’s commodity price index is broadly unchanging from a year ago. In 1973 commodity prices jumped by 70%, and in 1979 by almost 30%. The main reason for the latest rise of oil price is______.
A.
global inflation
B.
reduction in supply
C.
fast growth in economy
D.
Iraq’s suspension of exports
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参考答案:
举一反三
【判断题】用人的目的是“激活”人,而非“管住”“管死”人。要做到人尽其才,必须鼓励竞争,优胜劣汰。
A.
正确
B.
错误
【单选题】换向阀的( )指的是为了改变气体方向,阀芯相对于阀体所具有的不同的工作位置
A.
“通”
B.
“位”
C.
“单”
D.
“双”
【多选题】下列属于半导体传感器的是:
A.
霍尔传感器
B.
光敏电阻
C.
气敏管
D.
热电阻
【判断题】换向阀中的 “通”和“位”是换向阀的重要概念,位是指阀芯相对于阀体应有不同的工作位置。通是指换向阀与气压系统气路相连的气口数。( )
A.
正确
B.
错误
【单选题】下列选项中,不属于半导体气敏传感器的是( )。
A.
半导体气敏传感器
B.
半导体温度传感器
C.
半导体湿度传感器
D.
导体气敏传感器
【判断题】对于 单电控二位三通电磁换向阀 而言, 所谓 “位”指的是为了改变气体方向,阀芯相对于阀体所具有的不同的工作位置。“通”的含义则指换向阀与系统相连的通口,有几个通口即为几通。
A.
正确
B.
错误
【多选题】下列属于物性型传感器的是?
A.
电容式传感器
B.
压电式传感器
C.
热电阻传感器
D.
半导体式电阻应变片传感器
【简答题】设三棱镜的顶角为 60 度,单色光在棱镜中的折射率为 ,则最小偏向角为 。
【单选题】情景陈列是指。
A.
打破一般陈列的单调感而专门设计的陈列
B.
将用途上相互补充的商品陈列在一起
C.
突出商品的数量和价格优惠而进行的一种陈列
D.
再现生活中的真实情景而将相关商品组合在一起陈列
【单选题】一个棱镜顶角为B,P是棱镜度,n是折射率,则
A.
p=100tanB
B.
p=tanB
C.
p=100tan[(n一1)B]
D.
p=100sinB
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