多项选择题

证券组合管理特点主要表现在( )两个方面。

A.投资的分散性
B.投资的随意性
C.风险与收益的匹配性
D.风险与收益的不匹配性
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单项选择题
雾中在航机动船对水移动时应鸣放一长声, 关于所指的 “机动船”错误的说法是: Ⅰ、指任何用机器推进的船舶Ⅱ、指除操纵能力受到限制的船舶, 从事捕鱼的船舶和失去控制的船舶以外的任何机动船Ⅲ、 不包括限于吃水和从事拖带作业的船舶
A．Ⅰ
B．Ⅱ
C．Ⅰ、Ⅱ
D．Ⅰ、Ⅱ、Ⅲ
未分类题
Which statement is NOT true according to the letter?A.Comparative studies of seat-mile costs are invalid unless they compare similar aircraft over identical sectors.B.Asian carriers are not looking for more access to its domestic market.C.U.S. carriers have added anything in terms of price, innovation or seat availability in peak seasons.D.U.S. carriers with less regional rights will further make the economic opportunities unavailablE.
A.Comparative
B.
B.Asian
C.
C.U.S.
D.
D.U.S.
E.
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