如何防范个人信托理财产品的风险？
杂草群落的演替
校外活动是指（）。 ["由学校以外的教育机关组织和领导的学生课余教育活动","由学校在校外组织的丰富多彩的课余教育活动","由学生在教育者指导下所组织的课余教育活动","学生在课外自主选择、自由参加的活动"]
什么是边际效用递减规律？
package geometry； public class Hypotenuse { public InnerTriangle it = new InnerTriangle（）； class InnerTriangle { public int base； public int height； } } Which is true about the class of an object that can reference the variable base？ （） [" It can be any class."," No class has access to base."," The class must belong to the geometry package."," The class must be a subclass of the class Hypotenuse."]
主机服务器托管
