问题
选择题
—What a nice day! Let's go for a picnic on the beach together.
—______. [ ]
A. Goodbye
B. Good idea
C. Good job
D. Good day
答案
答案:B
—What a nice day! Let's go for a picnic on the beach together.
—______. [ ]
A. Goodbye
B. Good idea
C. Good job
D. Good day
答案:B
某电子系统是由部件A、部件B、部件C、部件D、部件E五个元器件组成的串联系统,其可靠性指标为MTBF=1000h,用评分分配法将可靠性指标分配到各部件。现请相关的专家对各部件进行分配,并通过计算,得出表5.2-1的结果。请分析下列问题:
|
分配给部件C的故障率λc(×10-4)为( )。
A.0.863
B.1.381
C.1.611
D.2.762