【简答题】根据题中所述术语,指出图9-19中状态1到状态4分别是什么?
【简答题】在下图中,根据题中给出的条件,画出入射光线、反射光线或平面镜的位置。
【判断题】电伤指电流的热效应、化学效应或机械效应对人体的伤害。
【单选题】How many acts are generally included in a variety play?
【单选题】8 , How many acts of violence may people have seen by the time they become adults?
【多选题】景区景点导游员的职责不包括______。
【简答题】电伤是指电流的热效应、_______或_______对人体外部造成的局部伤害。
【单选题】How many categories do speech acts fall into according to John Searle?