A.最大值 B.最小值 C.冲击值 D.有效值
A. B. C. D.
A.5% B.2% C.1% D.0.5%
A.90℃ B.80℃ C.70℃ D.65℃
A.45℃ B.60℃ C.70℃ D.90℃
