期货结算机构通常采用分级结算制度，即只有结算会员才能直接得到结算机构提供的结算服务，非结算会员只能由结算会员提供结算服务。( )
【单选题】
市场预期收益率为12%，无风险利率为6%，一只股票的贝塔值为0.9，这只股票的预期收益率是（ ）。
A.
10.8%
B.
11.4%
C.
13%
D.
16.2%
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【A2型选择题】
患儿，男，9岁。混合牙列，上唇系带位于两中切牙之间，中切牙之间出现间隙。上颌中切牙、上颌侧切牙牙冠斜向远中。上、下颌第一磨牙为偏远中关系，应（ ）
行上唇系带整形术
正畸关闭中切牙之间间隙
正畸排齐上颌中切牙、侧切牙
尽早进行正畸治疗
无须处理
【单选题】
楼梯间是重要的竖向安全疏散设施；下列建筑设置的楼梯间，不符合相关防火规范要求的是（ ）。
建筑高度为30m的写字楼，设置封闭楼梯间
地上10层的医院病房楼，设置防烟楼梯间
一类高层公共建筑的裙房，设置封闭楼梯间
地上2层的内廊式老年人公寓，设置敞开楼梯间
【单选题】
新题型
Zoos which spare no effort to take care of animals should not be subjected to unfair criticism.
To pressure zoos to spend less on their animals would lead to inhumane outcomes for the precious creatures in their care.
While animals in captivity deserve sympathy, zoos play a significant role in starting young people down the path of related sciences.
Zoos save people trips to wilderness areas and thus contribute to wildlife conservation.
For wild animals that cannot be returned to their natural habitats, zoos offer the best alternative.
Zoos should have been closed down as they prioritize money making over animals' wellbeing.
Marris distorts our findings which actually prove that zoos serve as an indispensable link between man and nature.
