考古资料表明,早在()时期制瓷工艺中就已使用了化妆土,但不够普遍。
A.三国
B.两晋
C.南北朝
参考答案:A
As for Latin America generally, there’s no reason why, ______resources available, it can’t become a highly industrialized area.
A.in terms of
B.in favor of
C.in honor of
D.in charge of
简述活塞式空压机的空气流程。