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Morphine结构中B/C环（），（）呈反式，（）呈顺式，环D为（）构象，（）呈半船式构象，镇痛活性与其分子构型密切相关。

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冷油器的停运步骤是什么？

Your company includes mobile computer users who frequently work offline. You are planning to deploy Windows 7 by using an image. You have the following requirements： Provide access to all applications when mobile computer users first start their computers. Minimize network and local storage requirements. Provide language-pack support based on the geographic location of the user. You need to ensure that your image-creation strategy meets the requirements. What should you do？（）

A. Create a single thin image for all computers.
B. Create a single hybrid image for all computers.
Create one thin image for the mobile computers. Create one thick image for all other computers.
D. Create one thick image for the mobile computers. Create one thin image for all other computers.

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信托计划终止时，信托公司应当于终止后（）个工作日内作出处理信托事务的清算报告，经审计后向受益人披露。

A. 5
B. 10
C. 15
D. 20

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（）年，学校培养的第一位博士研究生――数学系吴健宏通过博士论文答辩。成为湖南大学第一位毕业的博士研究生。

A. 1980
B. 1984
C. 1987
D. 1989

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