A.屋顶一处，中间层一处 B.屋顶二处，中间层一处 C.屋顶二处，首层一处 D.屋顶一处，首层二处
A.塑料 B.铁皮 C.柔性 D.刚性
A.15% B.25% C.35% D.45%
A.100mm B.150mm C.200mm D.250mm
A.10h B.12h C.24h D.48h
A.300mm B.400mm C.500mm D.600mm
A.150mm B.200mm C.250mm D.300mm
A.30mm B.40mm C.50mm D.60mm
A.1mm B.2mm C.3mm D.4mm
A.100mm B.200mm C.300mm D.400mm
A.50mm B.60mm C.70mm D.80mm
