单项选择题
A.273 B.32 C.0
A.800,780,647 B.647,780,800 C.800,647,780 D.647,800,780
A. -182.83, -185.71, -195.65 B. -195.65, -185.71, -182.83 C. -182.83, -195.65, -185.71 D. -195.65, -182.83, -185.71