贫溶剂带油时，芳烃的（）。
A、溶解度降低
B、选择性降低
C、折光率上升
参考答案：A
22. Dr. Frank failed many times but he finally_______to find a successful way to solve the problem.
A．broke off
B．broke up
C．broke down
D．broke through
任何只在借方登记或贷方登记，而无对应的贷方或借方记录，或者借贷金额不相等的记录，都是错误的会计记录。( )
