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【多选题】
关于精索静脉曲张导致睾丸功能受损的机制,下列哪些说法是正确的 :A.
使睾丸周围温度升高，曲细精管发生变化
B.
左肾上腺静脉血反流至睾丸，使后者接触到高浓度的肾上腺类固醇、儿茶酚胺和前列腺素
C.
睾丸血流流量减少，含氧量降低
D.
可导致附睾功能不全，影响精子活力
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参考解析：
知识点：
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举一反三
【判断题】Similar to the manufacturer, retailer also has inventory of finished goods, work in progress,and raw material.
A.
正确
B.
错误
【判断题】High speed CNC machining can generally remove material much slower than AM machines can add a similar volume of material.
A.
正确
B.
错误
【简答题】This second volume in the series of Classics of American Librarianship is devoted to library work with children. As stated in the preface to the first volume, on "Library and School", the papers chose...
【单选题】由毛毡或类似的材料制成的是什么颈托(How to call the neck brace when it is made of felt or similar material?)
A.
硬颈托 (Hard neck brace)
B.
软颈托 (Soft neck brace)
C.
充气颈托 (Inflatable neck brace)
D.
毛类颈托 (Hairy neck brace)
【简答题】Choose the best answer to complete each of the following sentences: • 1. Material of similar products is easily obtainable ____ a much lower level. • A. at B. on C. from D. for • 2. As we ...
【简答题】____ is a kind of strips or threads of rubber or similar stretchable material.
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