问答题

Which of the following would be the best title for the text?
A．Scientists May Have Found Titanic's Weak Link
B．In Weak Rivets, a Possible Key to Titanic's Doom
C．The Riddle of Titanic
D．Harland and Wolff, Sinner of Titanic

A.Scientists
B.In
C.The
D.Harland

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发言人在现场发言时，应注意()。

A.尊重听众
B.自谦自重
C.宽带对手
D.适可而止

为体现各指标权重的不同，指标之间的权重差异最好控制在( )以上

A.5%
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D.8%