灰化土剖面分异明显，表层有机质含量较高，土壤一般呈碱性反应。
参考答案：错
根据工业管道安装工程的相关工程量计算规则，三通、四通、异径管均按( )计算。
A．主管径
B．大管径
C．配件管径
D．主管径1/2
Try to finish the work with _____ money and _____ people.
[ ]
A. less; more
B. less; fewer
C. fewer; less
D. more; less
