A.30℃ B.40℃ C.50℃ D.60℃
A.0.25~0.35% B.0.35~0.55% C.0.15~0.55% D.0.15~0.35%
A.非金屬軟墊 B.自緊式墊片 C.金屬墊片 D.金屬與非金屬組合墊片