下列净化水的方法中，净化程度最高的是（ ）
A．沉降
B．吸附
C．过滤
D．蒸馏
蒸馏获得的水中不含有其他物质，净化的程度最高．
故选D．
公司合并特点
The duty-paying value shall be （）.
A. the value of imports or exports declared by the consignors or consignees
B. the true transaction value of imports & exports
C. the value higher than the transaction value of identical or similar goods
D. the value lower than the transaction value of identical or similar goods
