【单选题】【消耗次数：1】
混凝土中水泥的品种是根据( )来选择的。
①
施工要求的和易性
②
粗集料的种类
③
工程的特点
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【简答题】
水泥混凝土混合料是由[填空(1)]、水、粗集料、[填空(2)] 按适当比例配合、拌制而成的混合料。
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come up with
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keep up with
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put up with
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innovation
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selection
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proliferation
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condition
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situation
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state
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publicity
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The back garden of our house contains a lawn,
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which is
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which it is
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it is
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permission
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permit
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allowance
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reliable
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____ the water left in the kettle, the doctor put several things he unwrapped from a handkerchief.
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