在烧结过程中,大部分烤瓷的收缩率大约是()
A.10%
B.20%
C.30%
D.50%
参考答案:C
--Jerry, do you mind my pointing out your mistakes?
-- ______. Your advice is of great value to me.
A.Not at all
B.You’d better not
C.Of course
D.My pleasure
伏暑病情的轻重与哪些因素有关?