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【单选题】
在列车运行速度超过120km/h的区段，采用速差式自动闭塞，列车紧急制动距离由（）及以上闭塞分区长度保证。A.
一个
B.
三个
C.
两个
D.
四个
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【简答题】我们公司在全世界各个国家共有员工 28 万,是本地最大的跨国公司。
【单选题】In the passage, the writer suggests that the word 'cool'______.
A.
may not be as cool as it seems
B.
usually means something interesting
C.
can make your life colorful
D.
can be used instead of many words
【单选题】Why were gold and silver inconvenient if people had to buy something expensive?
A.
Because they were easy to steal.
B.
Because they were difficult for people to get.
C.
Because they were not easy to carry around.
D.
Because they themselves were expensive too.
【简答题】发动机若同时采用两种转换装置,通常二者放在同一外壳内,前后顺序为何?
【简答题】由于日月对地球隆起部分的引力作用,使得地球自转受到外力矩作用而发生地球旋转轴的进动现象,叫______________________。
【单选题】Why does the author say that even gold and silver were inconvenient if you had to buy some-thing expensive? 查看材料
A.
Because they are easy to steal.
B.
Because they are difficult for people to obtain.
C.
Because they are not easy to carry around.
D.
Because they themselves are expensive， too.
【单选题】The ratio of a country's exports plus imports to its total output (GNP or GDP):
A.
is known as the index of openness.
B.
provides a rough measure of the importance of international trade to that economy.
C.
if calculated for the United States would be quite low.
D.
All of the above.
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