【简答题】如图所示,已知平行四边形ABCD的周长为8cm,∠B=30°,若边长AB=x(cm). (1)写出?ABCD的面积y(cm 2 )与x的函数关系式,并求自变量x的取值范围. (2)当x取什么值时,y的值最大?并求最大值.
【单选题】What will happen if a patient experiences major bleeding?
【简答题】A.Ants tap plant lice till a drop of honey comes out. B.Ants take care of plant lice. C.Ants get their food from plant. D.Ants get honey from bees.
【简答题】求教:2016年1月9日雅思考试真题A卷听力第10题如何解答?
【简答题】如图所示,在平行四边形ABCD中,M,N分别为DC,BC的中点,已知 =c, =d,试用c,d表示 , .
【判断题】我国旅行社发展的第三阶段,国际旅行社的经营范围包括入境旅游业务、出境旅游业务。
【简答题】Stepfamilies are commonplace in the United States and their number continues to grow. While stepfamilies differ widely in their make-up, they all consist of a parenting couple and children, one or mor...
【单选题】根据旅行社服务对象和区域的不同,旅行社的经营范围包括入境旅游业务、出境旅游业务和国内旅游业务。下列属于国内旅游业务的是()。
【简答题】2 S O 2 ( g ) + O 2 ( g ) ⇌ 2 S O 3 ( g ) 1. What will happen to the equilibrium when more 2SO 2 (g) is added to the following system? 2. What will happen to the equilibrium when the volume of the sys...