下列相关图中，属于不相关的图形为（）
A.选项A
B.选项B
C.选项C
D.选项D
参考答案：D
__________ ,you need to give all you have and try your best. [ ]
A. Being a winner
B. To be a winner
C. Be a winner
D. Having been a winner
活塞从上止点移至下止点（所扫过）的空间称为（）。
A、汽缸工作容积
B、发动机容积
C、燃烧室容积
D、发动机排量
