题目内容
(请给出正确答案)
[主观题]
已知某品牌双开门冰箱的可靠性指标MTBF=15000h,且该产品失效分布服从指数分布,求(1)产品的失效率(2)当产品工作时间t=1500h时,可靠度和累积失效概率函数值()
A、6.67*10-5/小时。0.905,0.095
B、3.67*10-5/小时。0.92,0.08
C、5.67*10-5/小时。0.95,0.05
D、2.67*10-5/小时。0.96,0.04
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A、6.67*10-5/小时。0.905,0.095
B、3.67*10-5/小时。0.92,0.08
C、5.67*10-5/小时。0.95,0.05
D、2.67*10-5/小时。0.96,0.04
第2题
A、r6*[1-(1-r1*r2*r3)*(r4*r5)]
B、(1-r6)*[1-(1-r1*r2*r3)*(1-r4*r5)]
C、r6*[1-(1-r1*r2*r3)*(1-r4*r5)]
D、r6*(1-r1*r2*r3)*(1-r4*r5)
第3题
A、0.68,0.32,0.2,0.8
B、0.48,0.52,0.2,0.8
C、0.48,0.52,0.4,0.6
D、0.70,0.30,0.2,0.8
第4题
A、0.008/小时,0.0066/小时
B、0.0066/小时,0.0062/小时
C、0.004/小时,0.0082/小时
D、0.002/小时,0.0041/小时
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