【简答题】Look! That house is on fire. Let's call ______ quickly. [ ]
【简答题】试比较急性感染性心内膜炎与亚急性细菌性心内膜炎时赘生物的病变特点?
【单选题】篮球三分投篮区是以篮圈中心点的投影为圆心,距离端线中点的内沿()处,以6.25米为半径的圆形。
【简答题】Find ______, and leave as quickly as possible if a fire breaks out in a shop.
【判断题】篮球场内罚球圈、中圈的半径都是1.80米。