单项选择题
A.卷材防水 B.保温 C.刚性防水 D.涂膜防水
A.1/12~1/6 B.1/14~1/8 C.1/16~1/10 D.1/5~1/10
A.25° B.26° C.28° D.30°
A.20~30mm B.30~40mm C.10~30mm D.20~40mm
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