单项选择题
A.溶剂油含丁二烯 B.溶剂油不含丁二烯 C.溶剂油含水
A.0.75 B.0.5 C.1.3 D.1.1
A.3 B.2 C.4 D.1
A.≤0.2 B.≤0.4 C.≤0.5 D.≤0.3
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