A.300~380N·m B.310~370N·m C.320~380N·m D.330~370N·m
A.10min B.15min C.20min D.40min
A.1.50米×1.00米×0.006米 B.1.50米×1.00米×0.007米 C.1.50米×1.00米×0.008米 D.1.50米×1.00米×0.009米