问题:
[单选题]某公司生产的X型号彩色电视机的可靠性指标MTBF=12000h,经可靠性测试实验,证实该产品失效分布服从指数分布,求下列可靠性指标: (1)产品的失效率______ (2)当产品工作时间t=1000h 时,可靠度_____ 和累积失效概率函数值_______
A5.5*10^(-5)/小时,0.91,0.09
B8.33*10^(-5)/小时,0.92,0.08
C6.55*10^(-5)/小时,0.95,0.05
D7.55*10^(-5)/小时,0.96,0.04
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