单项选择题
产品的可靠性可分为固有可靠性和使用可靠性,( )是产品在实际使用过程中表现出的一种性能的保持能力的特性,它除了考虑固有可靠性的影响因素之外,还要考虑产品安装、操作使用和维修保障等方面因素的影响。
A.固有可靠性
B.使用可靠性
C.基本可靠性
D.任务可靠性
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单项选择题
M:I thought that you were going to the convention in Atlanta last Saturday.You said it many times before.W:I was planning to,but I haven’t been feeling well,so I stayed at home and did nothing else.Q:Where was the woman last Saturday?()
A.In Atlanta.
B.At a convention centre.
C.In a hospital.
D.At home.
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单项选择题
建设工程在保修范围和保修期限内发生质量问题的,( )应当履行保修义务。
A.设计单位
B.监理单位
C.施工单位
D.验收单位
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