單項選擇題如果每10萬個產(chǎn)品中每小時只有0.25個產(chǎn)品失效,則該產(chǎn)品的失效率為()
A.0.25×10−5/h
B.0.25×10−4/h
C.0.25×10−3/h
D.0.25×10−2/h
A.0.25×10−5/h
B.0.25×10−4/h
C.0.25×10−3/h
D.0.25×10−2/h