Which of the following descriptions of gray numbers is correct?
A、Agreynumberisakindofuncertainnumberwhichexactvalueandtherangeareunknown.;
B、Agreynumberisakindofuncertainnumberwhichexactvalueisunknownbuttherangeofthenumberisknown.;
C、Thevaluerangeofthegraynumbercanonlybeaninterval.;
D、Blackandwhitenumbersarenotgraynumbers.
发布时间：2024-09-28 22:59:51
