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【单选题】
关于路由器在网络中的作用,下列哪些陈述是正确的?A.
用于传播广播。
B.
用于放大冲突域
C.
用于分割广播域
D.
用于连接不同的网络技术。
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举一反三
【单选题】What can you get from the information above?
A.
Wash the hands before and after going to the toilet.
B.
Don’t leave the waste around.
C.
Sweep the floor as quickly as you can.
【单选题】The author is likely to go on to ______.
A.
talk about the importance of history
B.
give his own opinions on the aims and purposes of historical studies
C.
prove the invalidity of history books
D.
present more schools of thought in studies of history
【简答题】The children (play) the violin over there will go on the stage next week. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【简答题】设有学生信息关系STUDENT（sno，sname，，age，dept）。“查找信息系（IS系）中年龄小于20岁的学生的姓名”，该操作正确的关系代数表达式是（ ）。 A）仅Ⅰ B）仅Ⅱ C）Ⅰ和Ⅱ D）Ⅱ和Ⅲ
【简答题】在Python中,设有s='a,b,c'、s2=('x','y','z')以及s3=':',则s. split(','))的结果?
【多选题】What is the problem with Tom?
A.
He is sick.
B.
He wants to see his sister in the hospital.
C.
He doesn't know how to write a thank you letter for his sister.
D.
He wants to study with Mary in the library.
【简答题】在Python中,设有s= 'abe',则s.ljust(7) 的结果为
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