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【单选题】
按债券( )划分，可以将债券分为实物债券、凭证式债券及记账式债券。A.
发行主体
B.
利息支付方式
C.
偿还方式
D.
实物形态
E.
利率在期限内变化特征
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反馈参考答案：
举一反三
【单选题】雷达双工器又称雷达收发开关,其作用是使()。
A.
雷达具有发射和接收的功能
B.
雷达能够显示目标回波和杂波
C.
雷达天线具有发射和接收的功能
D.
雷达具有定位和导航的功能
【简答题】Time flies as an arrow. I'm already in the second half 1.______ of senior grade 3 before I realized it. It is only a little more 2.______ than three months before I graduate middle school. At ...
【单选题】听力原文：M: Hello! I'm a senior student. Can you tell me whether this reference room is only for faculty members? W: No, it's also open to the postgraduates, and undergraduates can come too if they've got...
A.
It's open only to teachers and postgraduates.
B.
He can study there if he is writing a research paper.
C.
Senior students can enjoy more rights than other undergraduates.
D.
He needs the approval of his professor for the use of it.
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