—Thank you. ________.
A:It couldn't be better
B:Of course you can
C:If you like
D:It's up to you
已知:6NiOOH+NH3+H2O+OH﹣═6Ni(OH)2+NO2﹣
下列说法正确的是( )
下列是我国古代科技著作,哪一组不属于同一领域( )