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【单选题】
实验设计可以帮助降低产品性能对环境变化或其他变化的敏感性，使产品性能更加稳定。尽管如此，实验设计并不等同于敏感性分析，因为( )。A.
实验设计考察多个变量的组合的变化对结果影响，而不是一次只考察一个变量的变化
B.
实验设计用于质量管理，而敏感性分析用于成本管理
C.
实验设计是一种统计方法，而敏感性分析是一种风险分析方法
D.
实验设计是美国人首先提出来的，而敏感性分析是日本人首先采用的
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皮皮学刷刷变学霸
举一反三
【单选题】What is NOT included in the subscription?
A.
Access to gym machines
B.
Nutritional advice
C.
Entry to classes
D.
Personal trainers
【单选题】You need to design access to Microsoft Outlook Web Access for remote users. What should you do？（）
A.
Place all user mailboxes on back-end servers. Deploy Outlook Web Access on three front-end servers that are members of the Network Load Balancing cluster
B.
Place all user mailboxes on back-end servers that are members of a Network Load Balancing cluster. Deploy Outlook Web Access on the back-end servers
C.
Place mailboxes for remote users on one back-end server and place all mailboxes for main office users on another back-end server. Deploy Outlook Web Access on the back-end server that contains the mailboxes for remote users
D.
Place all user mailboxes on two back-end servers that are members of a Network Load Balancing cluster. Place mailboxes for remote users and mailboxes for main office users into separate storage groups. Deploy Outlook Web Access on three front-end servers. Configure the front-end servers to access only the back-end Network Load Balancing cluster
【单选题】What is NOT mentioned as a major concern about Internet access in schools?
A.
Internet access is considered more of a distraction than a learning tool.
B.
Kids' attention spans and ability to focus are being affected.
C.
Internet access might occupy too much learning time.
D.
Likely to be affected by the stimulating Internet, kids' math and pelling may fail.
【单选题】关于目前流行的公交卡原理说法正确的是
A.
公交卡发射无线电波给读卡设备，公交卡完成相应扣款操作
B.
公交卡发射无线电波给读卡设备，读卡设备完成相应扣款操作
C.
读卡设备发射无线电波给公交卡，公交卡完成相应扣款操作
D.
读卡设备发射无线电波给公交卡，读卡设备完成相应扣款操作
【单选题】下列爆炸现象中，属于化学爆炸的是( )。
A.
高压蒸汽锅炉当过热蒸汽压力超过锅炉能承受的程度时，锅炉破裂，高压蒸汽骤然释放出来，形成爆炸
B.
悬浮于空气中的粉尘(煤粉、面粉等)以一定的比例与空气混合时，在一定的条件下所产生的爆炸
C.
陨石落地对目标的撞击等物体高速碰撞时，物体高速运动产生的动能，在碰撞点的局部区域内迅速转化为热能，形成爆炸现象
D.
自然界中的雷电
【简答题】what is access network ?
【单选题】What refers to the protocols used to determine who goes next on a multi-access channel?(74)
A.
MAC(medium access control)
B.
ARP(address resolution protocol)
C.
NAT(network address translation)
D.
CIDR(classless interdomain routing)
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