数据预处理主要有()和()两项工作。
参考答案:数据清洗;数据集成
---How will you go to the zoo tomorrow?
---If it ______ tomorrow, I’ll go there by car.
A.raining
B.rain
C.rains
D.will rain
血浆C02-CP的正常范围是
A.20~30vol%8.8~13.2mmol/
B.40~50vol%17.6~22mmol/
C.50~70vol%22~31mmol/
D.60~70vol%26.4~31mmol/
E.70~80vol%31~35mmol/