在△ABC中,a=3,b=7,c2=58,则△ABC是______.
∵32+72=58,
∴a2+b2=c2,
∴△ABC是直角三角形.
故答案为:直角三角形.
The young man has got great ______ and will surely become successful in the near future.
A.access
B.sympathy
C.potential
D.justice
过定位是指定位时工件的同一()被二个个定位元件重复限制的定位状态。
A、平面;
B、自由度;
C、圆柱面;
D、方向;