加氢精制反应中非烃化合物的反应从易到难（）
A.脱硫＞脱氧＞脱氮；
B.脱氮＞脱氧＞脱硫。
参考答案：A
The fire，believed to due to illegal construction on the building’s roof, was brought
under control after an hour．
A．have occurred
B．occur
C．have been occurring
D．be occurring
如何理解商业银行不得违反国家规定从事投资业务的规定？
