单项选择题
A.>10PaB.>5PaC.<5PaD.<10Pa
A.18℃~26℃;35%~75% B.18℃~26℃;40%~70% C.18℃~24℃;45%~65% D.18℃~24℃;40%~70%
A.百级 B.万级 C.十万级 D.三十万级