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【简答题】
某人拟在5年后获得本利和100万元,在存款年利率4%的情况下,求当前应存入的金额。
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】听力原文： Many scientists had very bad proficiency records in their school days. Famous inventor Thomas Edison, for instance, did so poorly in his first years of school that his teacher warned his parents...
A.
They were top students.
B.
They went to best public schools.
C.
They were not very good students.
D.
Their teachers thought they would be very successful.
【简答题】在分析单元操作或化工过程时,常用到 ( ) 、 ( ) 、平衡关系和过程速率四个基本概念。