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【简答题】
Translate the following passage into English 汽车自从发明以来使交通运输发生了革命性的变化,永远地改变了人们地生活,旅行和办事的方式。但另一方面,也带来了危害,尤其是公路死亡事故。然而,现今由于计算机技术和电子传感器的使用,有可能消除大多数交通事故。同时,计算机化的公路对环保也会很有利,能节省燃油,减轻交通阻塞,减少空气污染,还可用作公路扩建的替代方法。
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举一反三
【单选题】Internal scale economies occur when:
A.
expansion of output by a firm leads to greater specialization of labor.
B.
expansion in an industry drives down the input prices.
C.
industry growth leads to a greater diffusion of knowledge among firms.
D.
a firm pays higher input prices to expand production.
【单选题】______ various internal and external sources of finance that a business can employ when seeking to fund its operations.
A.
It exists
B.
There exist
C.
There is
D.
It does
【单选题】Internal scale economies occur when:
A.
Firm growth leads to more specialization by workers.
B.
Industry growth gives rise to better input markets.
C.
Industry growth leads to a greater diffusion of knowledge among firms.
D.
Firm growth drives up prices of some of the firm’s inputs.
【单选题】B类网络的缺省子网掩码为( ). (3分)
A.
255.255.255.255
B.
255.255.255.0
C.
255.255.0.0
D.
255.0.0.0
【单选题】When is the internal temperature of a large desert mammal lowest?
A.
Just before sunrise.
B.
In the middle of the day.
C.
Just after sunset.
D.
Just after drinking.
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