均衡设计是为了确保实体障碍结构的每一个方位能够提供等效的延迟能力,换句话说就是实体障碍结构不应该有()。
A、高低不平
B、不均衡情况
C、薄弱环节
D、厚薄不均
参考答案:C
圆柱体的底面直径是3厘米,高是9.42厘米,它的侧面展开后是一个正方形.______.
I certainly appreciate _____ us about the delay in delivering the materials because we had planned to begin work tomorrow.
A.him to tell
B.him of telling
C.he told
D.his telling