【单选题】某产品是由4个单元组成的串联系统,每个单元寿命均服从指数分布,故障率分别为λA=0.003/h,λB=0.001/h,λC=0.004/h,λD=0.002/h,则:
系统发生故障,最有可能是()发生故障。A.单元A
B.单元B
C.单元C
D.单元D
网考网参考答案:C
网考网解析:
[解析] max{0.003,0.001,0.004,0.002}=0.004h,故障率越高,可靠度越差,发生故障的概率越大。
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