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【多选题】
下述有糊精表述正确的是A.
环糊精有α、β、γ三种类型，其提供的空穴空间依次增大
B.
β-CD 的葡萄糖单体个数为7
C.
α 、β、γ-CD的空腔都表现疏水性，因此可以溶性药物
D.
α 、β、γ-CD的空穴开口处都表现亲水性，可以有效提高的水溶性
E.
β-CD 的溶解度最小
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【简答题】In 1816, there were no schools for the deaf in America. Several people started a few schools, but in the end all of the schools closed. There were too many problems. The first people to succeed were L...
【单选题】在投资中心的主要考核指标中，能够全面反映该责任中心投入产出的关系，避免本位主义发生，并使个别投资中心的利益与整个企业的利益统一起来的指标是( )。
A.
可控成本
B.
边际贡献
C.
投资报酬率
D.
剩余收益
【单选题】From text we learn that ______.
A.
deaf people made signs to earn a living
B.
there is still no way to communicate with the deaf
C.
sign language helped the deaf learn to read
D.
many deaf people now can speak
【单选题】在投资中心的主要考核指标中,能够全面反映该责任中心投入产出的关系,避免本位主义发生,并使个别投资中心的利益与整个企业的利益一致的指标是( )。
A.
利润总额
B.
投资利润率
C.
剩余收益
D.
可控成本
【简答题】HT300表示最小抗拉强度为300MPa的_____________。
【单选题】We can assume from this passage that ______.
A.
Sophia thought that deaf people were better off living with a relative who could take care of them and support them
B.
Sophia believed that deaf people should have equal rights of education and employment
C.
Sophia wished that she could have visited deaf schools in Europe
D.
Sophia always wanted a dormitory to be named after her
【单选题】在投资中心的主要考核指标中，能够全面反映该责任中心投入产出的关系、避免本位主义发生，并使个别投资中心的利益与整个企业的利益统一起来的指标是( )。
A.
可控成本
B.
利润总额
C.
投资利润率
D.
剩余收益
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