如下图所示等截面支筒式倒锥壳水塔，水柜容量150m3，支筒高度为2.4m，材料用C30混凝土。基本风压w0=0.6kN/m2，B类地面粗糙度。
已知水柜自重及顶盖活载为800kN，支筒及爬梯等自重为650kN，支筒截面惯性矩I=0.8m4。当按《建筑结构荷载规范》计算风振系数最大值时，结构的基本自振周期T1(s)最接近于()项数值。
A. 0.15
B. 0.9
C. 1.2
D. 1.45
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听力原文：Why does the woman want to be transferred to another department？
(14)
A. Nora is going crazy.
B. She is unsatisfied with her present job.
C. Nora isn't good at her job.
D. She can't stand her co-worker, Nora.
A．capableB．competentC．ableD．efficient
A. capable
B. competent
C. able
D. efficient
A．situationB．environmentC．conditionD．state
A. situation
B. environment
C. condition
D. state
In the US, people argue about
A. whether people under 18 need cosmetic surgery.
B. under what circumstance people should have cosmetic surgery.
C. at what age people should have cosmetic surgery.
D. whether cosmetic surgery should cater for average people.
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