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【单选题】

下列哪种保温材料是膨胀聚苯板的一种,在聚苯乙烯原材料里添加了红外反射剂,反射热辐射并将EPS的保温性能提高30%,同时防火性能很容易的实现了B2级到B1级的跨越。()

A.
挤塑聚苯板
B.
聚苯板
C.
石墨聚苯板
D.
泡沫玻璃保温板
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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】膨胀聚苯板薄抹灰外墙外保温系统用胶粘剂拉伸粘结强度试验结果以()表示。

A.
4个中间值的算术平均值
B.
6个中间值的算术平均值
C.
8个中间值的算术平均值
D.
全部试样检测值的算术平均值