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【单选题】
当屋面坡度大于15％或受震动时，沥青防水卷材的铺贴方向应（）。
A.
平行于屋脊
B.
垂直于屋脊
C.
与屋脊呈45°角
D.
上下层相互垂直
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【单选题】The Grand Canyon Standing on the rim of the Grand Canyon(大峡谷), gazing across this giant wound in the Earth’’s suce, a visitor might assume that the canyon had been caused by some ancient convulsion...
A.
it was caused by some ancient convulsion
B.
its presence is an embarrassment to the state of Colorado
C.
it looks like an injury on the Earth’s suce
D.
it has caused many visitors to injure themselves
【单选题】与聚合物改性沥青防水卷材相比，氯化聚乙烯一橡胶共混形防水卷材的优点是( )。
A.
高温不流淌，低温不脆裂
B.
拉伸强度高，延伸率大
C.
具有耐臭气、耐老化性能
D.
价格便宜，可单层铺贴
相关题目：
【单选题】The Grand Canyon Standing on the rim of the Grand Canyon(大峡谷), gazing across this giant wound in the Earth’’s suce, a visitor might assume that the canyon had been caused by some ancient convulsion...
A.
it was caused by some ancient convulsion
B.
its presence is an embarrassment to the state of Colorado
C.
it looks like an injury on the Earth’s suce
D.
it has caused many visitors to injure themselves
【单选题】与聚合物改性沥青防水卷材相比，氯化聚乙烯一橡胶共混形防水卷材的优点是( )。
A.
高温不流淌，低温不脆裂
B.
拉伸强度高，延伸率大
C.
具有耐臭气、耐老化性能
D.
价格便宜，可单层铺贴
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