人的各部分形体,都是以()为基础造型的。
A.长方体
B.正方体
C.圆柱体
D.四面体
参考答案:C
_____ was a time _____ they played for the love of the game. [ ]
A. It; that
B. There; that
C. It; when
D. There; when
土工加筋带的似摩擦系数应()。
A.≥0.3
B.≤0.4
C.≥0.4
D.≤0.3