單項(xiàng)選擇題
A.120minB.150minC.180minD.210min
A.(24±1)hB.(24±2)hC.(24±3)hD.(24±4)h
A.100g,0.1gB.200g,0.1gC.500g,1gD.1000g,1g
A.142.0mLB.141.5mLC.142.5mLD.145.0mL
A.±0.1mLB.±0.5mLC.±1mLD.±2mL
A.5.4%B.5.9%C.再做一次D.作廢
A.4000-5000B.4000-6000C.5000-6000D.5000-5500
A.(0.5±0.1)MPaB.(0.5±0.2)MPaC.(0.05±0.01)MPaD.(0.05±0.02)MPa
A.1minB.2minC.3minD.5min
A.弱酸浸泡B.肥皂液C.專用清洗劑D.飲用水
A.水篩法B.手工篩析法C.負(fù)壓篩析法D.以上都可以