單項(xiàng)選擇題
A.1~2B.3~4C.5~6
A.1/3B.1/4C.1/5
A.—層B.二層C.三層
A.環(huán)氧B.呋喃
A.0.5B.1C.2
A.60B.80C.100
A.35%?45%B.20%?30%C.10%?29%
A.36%?40%B.40%?45%C.45%?50%
A.7%?8%B.10%?12%C.15%?16%
A.酚醛B.呋喃C.水玻璃