台阶面层应按踏步及最上一层踏步沿水平投影面积加上台阶踢脚立面面积计算。
参考答案：错
小学德育的基本途径是__________。
Investment in product quality improvement, especially defect prevention and appraisal, can often be borne by ______ .
A．the organization
B．the project management team
C．executive management
D．the project
