A、清除較小的顆粒 B、清除較大的顆粒 C、大小顆粒都清楚 D、損壞設備
A、0.95~2.00g/cm3,±0.01g/cm3 B、0.98~1.50g/cm3,±0.01g/cm3 C、0.90~1.00g/cm3,±0.02g/cm3 D、0.96~1.80g/cm3,±0.01g/cm3
A、杯蓋 B、支架 C、水平泡 D、水