题目内容
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[单选题]
The（）serves as an interface between hardware and software.
A.System
B.application program
C.control unit
D.operating system
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.System
B.application program
C.control unit
D.operating system
如果结果不匹配，请 联系老师 获取答案
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