Shengzhou Ⅶ has been ____ (success) set up into the space.
Be ____ (care) of the dog. Don't get too close to it.
已知圆锥的母线长为4,底面半径为2,则圆锥的侧面积等于()
如图所示是杨才家的电热水壶的铭牌,他用该电热水壶将1.5kg的水从20℃加热到100℃.