四川省西部的横断山脉位于下列两大地形区之间[ ]
A.四川盆地和青藏高原
C.四川盆地和长江中下游平原
B.四川盆地和渭河平原
D.青藏高原和内蒙古高原
答案:A
When the adjacency matrix method is used to store a graph, which of the statements is (are) true ( )
A.Ⅰ and Ⅱ
B.Ⅰ only
C.Ⅱ only
D.neither
急性肾衰竭