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【单选题】

地暖施工中在与内外墙、柱及过门等垂直部件交接处应敷设不间断的伸缩缝,伸缩缝宽度不应小于()mm,伸缩缝宜采用聚苯乙烯或高发泡聚乙烯泡沫塑料;

A.
10
B.
20
C.
25
D.
30
参考答案:
参考解析:
.
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【单选题】Desperately short of living space and dangerously prone to flooding, the Netherlands plans to start building homes, businesses and even roads on water. With nearly a third of the country already cover...

A.
most parts of the country are covered by water
B.
the country is constantly threatened by floods
C.
it will promote the cultivation of flowers
D.
people think it better to live on water

【单选题】泡沫塑料的原材料为()。

A.
聚苯乙烯
B.
环氧树脂
C.
邻苯二甲酸
D.
醋酸乙烯

【单选题】下列关于泡沫塑料说法有误的一项是()

A.
泡沫塑料保持了原有树脂的性能
B.
泡沫塑料加工成型方便、施工性能好等优点
C.
泡沫塑料广泛用于建筑保温、冷藏、绝缘、减振包装等若干领域
D.
泡沫塑料比同种塑料具有表观密度大、导热系数高