【简答题】设g(x,y)在[a,b]× 连续,偏导数g' y (x,y)处处存在,且存在正的常数m,M使m≤g' y (x,y)≤M( (x,y)∈[a,b]× ).证明方程g(x,y)=0在[a,b]内必有唯一连续解y=φ(x).
【判断题】'反向假冒'是指未经商标注册人同意,更换其注册商标并将该更换商标的商品又投重新市场的行为。( )
【单选题】为了减少耐药性,应用治疗骨、关节结核药物时应( )
【单选题】为了减少耐药性,应用治疗骨、关节结核的药物时应
【单选题】We rushed to the football court, only to see a sign _____ into the ground reading PERIODIC MAINTENANCE (定期维修).
【单选题】为了减少耐药性,应用治疗骨、关节结核药物时应
【单选题】He was in such a hurry that he rushed out of the room______he could say something to me.
【单选题】By the time we rushed to the hall, the party ________ for ten minutes.
【简答题】已知函数f(x),g(x)同时满足:g(x-y)=g(x)g(y)+f(x)f(y);f(-1)=-1,f(0)=0,f(1)=1,求g(0),g(1),g(2)的值.
【判断题】未经商标注册人同意更换其注册商标并将该更换商标的商品又投入市场的,属于侵犯商标权行为