【简答题】阅读理解。 Tom arrived at the bus station quite early for the London bus. The bus for London would not leave until five to twelve. He saw a lot of people waiting in the station. Some were standing in lines...
【多选题】下列属于慢性非传染性疾病患病的中间危险因素是
【简答题】设二次函数f(x)=x 2 +ax+5对于任意t都有f(t)=f(-4-t),且在闭区间[m,0]上有最大值5,最小值1,则m的取值范围是______.
【简答题】Tom arrived at the bus station quite early for the London bus. The bus for London would not eave until five to twelve. He saw a lot of people waiting in the station. Some were standing in lines, other...
【单选题】设 , 则 在区间[-2,0]上的最大值是
【简答题】Tom arrived at the bus station quite early for the London bus. The bus for London would not leave until five to twelve. He saw a lot of people waiting in the station. Some were standing in lines, othe...
【简答题】设a>0,且a≠1,函数f(x)=log a x在区间[a,2a]上的最大值与最小值之和为3,则a=______.
【单选题】下列不属于慢性非传染性疾病患病的中间危险因素的是