考博考试

【单选题】According to the article, in which area was it more energy-efficient
A. Smelting industry
B．Mining industry
C．Banking
D．Weaving
网考网参考答案：A
网考网解析：
注意原文：the discovery of a new method of making brass，which saved about half of the fuel previously used，而制造黄铜属于冶炼业。 查看试题解析出处>>