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【单选题】
厚朴干皮的形状和厚度是( )A.
单卷筒状,厚1~2mm
B.
板片状,厚3~5mm
C.
槽状或板片状,厚2~3mm
D.
单卷筒状或双卷筒状,厚2~7mm
E.
单卷筒状,弯曲似鸡肠,厚1~3mm
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【简答题】A gravimetric method is one in which theysis is completed by a weighing operation. A volumetric method is one inwhich the ysis is completed by measuring the volume of a solution ofestablished ...
【单选题】污泥调理的目的是( )。
A.
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B.
去除污泥中的间隙水，缩小污泥的体积
C.
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D.
去除污泥颗粒内的毛细管结合水
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A.
to make profit for biotech company
B.
to repay the personal debt
C.
to make the research possible to last 17 years
D.
to make their research legal
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【简答题】已知集合A={（x，y）||x|+|y|≤1}，则集合A表示的图形的面积为______．
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