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【简答题】
简述普通股与优先股的区别。
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】(2012·昆明高二检测)It is well-known that proper amounts of exercises, if _______ regularly, will benefit our health.
A.
being carried out
B.
carrying out
C.
carried out
D.
to carry out
【单选题】Big Ben was named after
A.
Christopher Wren.
B.
Benjamin Hall.
C.
Ben John.
D.
Ben Nevis.
【简答题】Ben： 2
【简答题】某元件的导纳的有名值为 Y = G+jB ,当基准值取功率 S B ,电压为 U B ,则电导的标幺值为 。
【单选题】_____ a good trip last month? [ ]
A.
Did Ben have
B.
Does Ben have
C.
Is Ben having
D.
Did Ben has
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