水处理中脱盐和软化有什么区别?
参考答案:
软化:除去水中的钙、镁等金属离子的过程
脱盐:除去水中多有阴、阳离子的过程
Perhaps we should think in terms of raising interest rates () them, in consideration of the new reports about inflation reported last June.
A.then reducing
B.and reduce
C.although reduce
D.rather than reducing
石灰岩与盐酸反应生成的气体是()。
A.一氧化碳
B.二氧化碳
C.氧气
D.氢气