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某二级公路，K2+200～K6+800为干燥路段，路面结构为底基层为30cm厚填隙碎石，基层为20cm厚水泥稳定碎石，面层为9cm厚的沥青混凝土。 路面底基层施工时，施工单位采用干法施工，其部分施工方法如下： (1)初压：用振动压路机碾压3～4遍，使粗碎石平整。 (2)撒铺填隙料：用石屑撒布机将干填隙料均匀地撒铺在已压稳的粗碎石层上，松铺厚度约2.5～3.0cm。必要时，用人工或机械扫匀。 (3)碾压：用振动压路机慢速碾压，将全部填隙料振入粗碎石间的孔隙中。 (4)再次撒布填隙料：用石屑撒布机将干填隙料再次撒铺在粗碎石层上，松铺厚度约2.0～2.5cm。用人工或机械扫匀。 根据场景，回答下列问题： 用于该路的填隙碎石，其最大粒径不应超过( )。
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水杨酰胺在人体中的主要代谢反应是首先经胃肠道黏膜中的硫酸结合，然后在肝脏内与葡萄糖醛酸的结合反应。当剂量增加时，胃肠道内硫酸结合物的生成率逐渐降低，而此时由肝脏内葡萄糖醛酸结合物的生成率却升高，其原因是
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TEXT B The biographer has to dance between two shaky positions with respect to the subject. Too close a relation, and the ’miter may lose objectivity. Not close enough, and the writer may lack the sympathy necessary to any effort to portray a mind, a soul—the quality of life. Who should write the biography of a family, for example Because of their closeness to the subject, family members may have special information, but by the same token, they may not have the distance that would allow them to be fair. Similarly, a king’s servant might not be the best one to write a biography of’ that king. But a foreigner might not have the knowledge and sympathy necessary to write the king’s biography—not for a readership from within the kingdom, at any rate. There is no ideal position for such a task. The biographer has to work with the position he or she has in the world, adjusting that position as necessary to deal with the subject. Every position has strengths and weaknesses: to thrive, a writer must try to become aware of these, evaluate them in terms of the subject, and select a position accordingly. When their subjects are heroes of famous figures, biographies often reveal a democratic motive: they attempt to show that their subjects arc only human, no better than anyone else. Other biographies are meant to change us, to invite us to become better than we are. The biographies of Jesus found in the Bible are in this class. Biographers may claim that their account is the" authentic" one. In advancing this claim, they are helped if the biography is" authorized" b the subject; this presumably allows the biographer special access to private information. "Unauthorized" biographies also have their appeal, however, since they can suggest an independence of mind in the biographer. In book promotions, the" unauthorized “characterization usually suggests the prospect of juicy gossip that the subject had hoped to suppress. A subject might have several biographies, even several" authentic" ones. We sense intuitively that no one is in a position to tell " the" story of a life, perhaps not even the subject, and this has been proved by the history of biography. An unauthorized biography is likely to attract more readers because______.
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