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【单选题】

地板辐射采暖系统中,绝热层采用用聚苯乙烯泡沫塑料板时,沿外墙周边时厚度为()。

A.
20mm
B.
30mm
C.
40mm
D.
50mm
参考答案:
参考解析:
.
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【单选题】Desperately short of living space and erously 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
相关题目:
【单选题】Desperately short of living space and erously 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