按JB/T4710的规定，在计算自振周期时，如加大塔壳和裙座壳的厚度，则该塔的自振周期将变（）。
参考答案：小
that the government can lead them out of the finacial crisis, people are optimistic about the future of the country.
A．Convincing
B．Convinced
C．To convince
D．Having convinced
如何衡量旅游消费效果？
