题型:单项选择题 Products which are made from dirts and are ________high temperatures are known as ceramics.A.tempered inB.subjected toC.exposed toD.baked in 查看答案
题型:单项选择题 某计算机系统的可靠性结构是如下图所示的双重串并联结构,若所构成系统的每个部件的可靠度均为0.9,即R=0.9,则该系统的可靠度为()。A.0.9997B.0.9276C.0.9639D.0.6561 查看答案