Drilling oil wells was______work that he couldnt finish it by himself.
A. such difficult
B. such a difficult
C. so difficult a
D. so difficult
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分析国内铜的供给时,必须关注期初库存量,当期产量,当期进口量、TC/RC等数据。()
价格、持仓量和成交量三者之间关系属于持仓量研究的方向。()
Zhou Qiren, a professor in Beijing University, believed that business in the market economy must______the right balance between their pursuit of profits and the needs of customers.
A. regain
B. assume
C. strike
D. decline
近年来,中国已经成为全球最大的甲醇生产和消费国,按生产工艺不同,甲醇可分为煤制甲醇、焦炉气制甲醇和天然气制甲醇三大类,国内甲醇生产占比最大的是焦炉气甲醇。()