A.7 B.10 C.28 D.30
A.溫度(23±2)℃,相對(duì)濕度(50±10)% B.溫度(20±2)℃,相對(duì)濕度(60±5)% C.溫度10~25℃,相對(duì)濕度不低于50% D.溫度10~25℃,相對(duì)濕度不低于60%
A.20 B.30 C.40 D.50