單項(xiàng)選擇題
A.1350±1g B.1350±2g C.1350±5g D.1350±10g
A.5.1 B.4.8 C.結(jié)果作廢 D.以上都不是
A.100mm,10mm B.10mm,10mm C.10mm,100mm D.100mm,100mm
A.150mm*150mm*150mm B.40mm*40mm*160mm C.70.7mm*70.7mm*70.7mm D.50mm*50mm*50mm
A.72h±30min B.72h±45min C.72h±1h D.72h±3h
A.240N/s±20N/s B.2400N/s±200N/s C.500N/s±100N/s D.50N/s±5N/s
A.溫度20℃±2℃,相對(duì)濕度應(yīng)為50% B.溫度20℃±2℃,相對(duì)濕度應(yīng)為90% C.溫度20℃±1℃,相對(duì)濕度應(yīng)為50% D.溫度20℃±1℃,相對(duì)濕度應(yīng)為90%
A.30min B.45min C.2h D.8h
A.±5%,±5% B.±10%,±5% C.±10%,±10% D.±15%,±10%
A.±5% B.±10% C.±15% D.±20%
A.40mm*60mm B.30mm*50mm C.40mm*40mm D.60mm*660mm