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【单选题】
查询选修了课程号为/'C2/'的学生号和姓名，若用下列SQL的SELECT语句表达时，哪一个是错误的?______。A.
SELECT S.S#,SNAME FROM S WHERE S.S#=(SELECT SC.S# FROM SC WHERE C#=/'C2/')
B.
SELECT S.S#,SNAME FROM S,SC WHERE S.S#=SC.S# AND C#=/'C2/'
C.
SELECT S.S#,SNAME FROM S,SC WHERE S.S#=SC.S# AND C#=/'C2/'ORDER BYS.S#
D.
SELECT S.S#,SNAME FROM S WHERE S.S# IN(SELECT SC.S# FROM SC WHERE C#=/'C2/')
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举一反三
【单选题】The______of electrical energy into thermal energy is a process that is easily carried out at 100% efficiency.
A.
conversion
B.
convention
C.
conversation
D.
version
【判断题】The more energy is converted, the more energy is accumulated. Basically speaking energy remains the same according to the mass balance equation.
A.
正确
B.
错误
【简答题】Emotional energy is in a way different from physical energy in that the more you give, ________.
【单选题】When energy is converted from one form to another, some energy is always lost as heat.( ), no energy is over 100% efficient.
A.
In other terms
B.
In other words
C.
In another way
D.
In some way
【单选题】When energy is converted from one form to another, some energy is always lost as heat. ______, no energy conversion is ever 100% efficient.
A.
In other terms
B.
In other words
C.
In another way
D.
In some way
【单选题】根据下列材料请回答 60～63 题： 第 60 题 What is most special about Versailles according to the writer?
A.
The blurred images reflected on the windows．
B.
The number of French customers．
C.
The expensive Cuban food．
D.
The walls of mirrors．
【单选题】Which of the following statements concerning energy is correct?
A.
Energy can be created or destroyed
B.
Energy may not be transformed
C.
The total quantity of energy in the universe is always the same
D.
None of the above
【简答题】听下面一段材料，回答 17～20 题。 第 17 题 What should the students bring with them to the exam?
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