单项选择题
A.PAA胶粘剂 B.PVAC胶粘剂 C.424地板胶 D.耐候密封胶
A.0.2~0.5mm B.0.5~1.0mm C.1.5~2.0mm D.2.0~2.5mm
A.2~3min B.1~2min C.5~7min D.3~5min
A.2% B.1.5% C.1% D.0.5%
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