分解锅、聚合釜属于石油化工设备中的()。
A.反应设备
B.换热设备
C.分离设备
D.储存设备
参考答案:A
Although ____, the Acropolis is still handling serious problems such as deliberate damage and stealing of
stones. [ ]
A. conserving
B. to be conserved
C. having conserved
D. being conserved
The discovery of new oil-fields in various parts of the country filled the government with ______ hope.
A.eternal
B.infinite
C.ceaseless
D.everlasting