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【多选题】
符合轻集料混凝土技术性能的有( )A.
同普通混凝土一样,轻集料混凝土的流动性主要决定于用水量
B.
轻集料混凝土拌和物粘聚性和保水性较差
C.
若加大流动性则集料上浮、易离析
D.
轻集料具有颗粒体积密度小,表面粗糙,吸水性强等特点,因此其拌和物的和易性与普通混凝土有明显的不同
E.
轻集料混凝土拌和物的流动性好
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举一反三
【单选题】Project Hond Start which was inaugurated in the United States in 1965 is a federally funded preschool for economically and culturally disadvantaged children.
A.
initiated
B.
celebrated
C.
installed
D.
proposed
【单选题】Federally funded loans are preferred to private funding for__________.
A.
their easy accessibility
B.
their high reliability
C.
their lower interest rates
D.
their wide availability
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