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【单选题】
以下关于混凝土收缩,正确的说法是 (1)收缩随时间而增长 (2)水泥用量愈小,水灰比愈大,收缩愈大 (3)骨料弹性模量大级配好,收缩愈小 (4)环境湿度愈小,收缩也愈小 (5)混凝土收缩会导致应力重分布A.
A、（1）、（3）、（5）
B.
（ 1 ）、（ 4 ）
C.
（ 1 ）～（ 5 ）
D.
（ 1 ）、（ 5 ）
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【单选题】Our father's health is what matters, and the cost of his treatment is of ( ) importance.
A.
secondary
B.
modify
C.
cling
D.
delegate
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