展开图的放射线法：实际上就是将构件表面分成若干梯形部分在平面上展开
参考答案：对
_____ sweet and good, the birthday cake was soon eaten up by those children.
A．To taste
B．Tasting
C．Tasted
D．Having tasted
混凝土的（）强度是计算其抗裂的重要指标。
A．抗压
B．抗弯
C．抗拉
D．抗剪
