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【单选题】
一般计算机硬件系统的主要组成部件有5大部分，下列选项中不属于这5大部分的是 ( )。A.
运算器
B.
软件
C.
输入设备和输出设备
D.
控制器
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反馈参考答案：
举一反三
【单选题】If the letter (to be mailed) (was placed) on the writing table an hour ago, it (is) certain (being) there now.
A.
to be mailed
B.
was placed
C.
is
D.
being
【单选题】After reading the passage, we learn that______
A.
the author believes that crime will certainly promote the rappers' album.
B.
the conventional wisdom of crime's connection with credibility is always true.
C.
being put into jail will not necessarily help a rappers' career.
D.
being put into jail may change the perceptions fans already have.
【单选题】Have you anything ___?
A.
to say about
B.
to say about it
C.
say about
D.
say about it
【简答题】十六进制是“逢十六进一”，是以16为底数的计数体制，它有0，1，2，3，4，5，6，7，8，9，A，B，C，D，E，F共十六个数码。试将十六进制数(7E6AD) 16 转换为十进制数和二进制数。
【单选题】If the letter (to be mailed) was placed on the (writing) table an hour (ago), it is certain (will be) there now.
A.
to be mailed
B.
writing
C.
ago
D.
will be
【单选题】Systems of inbound and outbound lanes to promote the safe flow of vessel traffic in certain areas around the world are known as ______.
A.
merchant vessel reporting systems
B.
traffic separation schemes
C.
collision avoidance fairways
D.
restricted maneuverability channels
【单选题】I hope they will finish the project in time, but they themselves are very_____ that it will.
A.
certain
B.
confident
C.
doubtful
D.
suspicious
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