A.2 B.3 C.4 D.5
A.10° B.20° C.30° D.40°
A.≤850 B.1000~1100 C.1500~1650 D.1800~2000
A.20 B.30 C.40 D.60
A.大力發(fā)展纖維板 B.大力發(fā)展膠合板 C.大力發(fā)展刨花板 D.大力發(fā)展人造板材