Which of the following statements about software characteristics is true？_关于软件特性的描述哪项是对的？_（）
A. The faults in a software system come from wearing out
B. Software is something mysterious controlled by some geniuses
C. Software is transplantable
D. Software is a kind of concrete physical entity
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Which of the following statements is not correct？_以下哪个语句是不正确的？_（）
A. Client is the individual or organization that wants a product to be developed
B. Developers are the members of the organization responsible for building that product
C. User is the person or persons on whose behalf the client has commissioned the product and who will utilize the software
D. The client, developer and user cannot be the same person or the same organization
Which of the following statements about software life cycle is true？__关于软件生命周期的描述以下哪项是对的？ __（）
A. Software life cycle is the repetitive nature of software testing
B. Every software system has its life cycle
C. Software life cycle is the period of time that a software product is in service
D. Software life cycle is the cycling through phases of specification, design, implementation, and testing
Which of the following statements about software is true？_以下哪个语是正确的？ ____（）
A. Software is transplantable
B. Software is a kind of concrete physical entity
C. The faults in a software system come from wearing out
D. Software is something mysterious mastered by some geniuses
Which of the following statements is true？_以下哪个语句是正确的？____（）
A. Software company can always make more money from software development than from mainteannce
B. A software system goes through its life cycle, like a human being goes through his/her birth to death
C. Software company can make no or little money from software maintenance
D. Software development is more important than maintenance
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