进行酸碱度试验时，需制备土悬液，该悬液土样应过多大孔径筛( )
A．1mm
B．2mm
C．0.074mm
D．0.5mm
参考答案：A
Why does teaching as a career _____ many people?[ ]
A. apply for
B. attract to
C. appeal to
D. agree with
脱硫工艺流程的复杂程度为（）
A.湿法>干法>湿干法
B.湿法>湿干法>干法
C.湿法、湿干法和干法相似
D.湿法<湿干法<干法
