单项选择题
ISO 9000系列标准和软件成熟度模型CMM都着眼于质量和过程管理。ISO9000系列标准的主导思想是:
①强调质量(1);
②使影响产品质量的全部因素始终处于(2)状态;
③要求证实企业具有持续提供符合要求产品的(3);
④强调质量管理必须坚持进行质量(4),而CMM则强调持续的(5)。
A.形成于软件需求
B.形成于软件设计
C.形成于软件实现
D.形成于生产的全过程
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单项选择题
Packet-switching wireless networks are preferable(41)when transmissions are(42)because of the way charges are(43)per packet. Circuit-switched networks are preferable for transferring large files or for other lengthy transmissions because customers are(44)for the(45)of time they use the net-work.
A.to
B.for
C.than
D.only
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单项选择题
For each blank, choose the best answer from the four choices and write down on the answer sheet.(11)is a protocol that a host uses to inform. a router when it joins Or leaves an Internet multicast group.(12)is an error detection code that most data communication networks use.(13)is an interior gateway protocol that uses a distance vector algorithm to propagate routing information.(14)is a transfer mode in which all types of information are organized into fixed form. cells on an asynchronous or non-periodic basis over a range of media.(15)is an identifier of a web page.
A.ICMP
B.SMTP
C.IGMP
D.ARP
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