新闻选择首先使用的筛选标准是（）。 ["新闻价值","政策法规","伦理道德","审美标准"]
什么是绝对零压力？
推扫式传感器
与日本商人进行交往时，应该（） ["先略做让步","就事论事","避免针锋相对","不能太固执"]
Which two statements are true regarding the creation of a default constructor？（） [" The default constructor initializes method variables."," The default constructor invokes the no-parameter constructor of the superclass."," The default constructor initializes the instance variables declared in the class."," If a class lacks a no-parameter constructor，， but has other constructors， the compiler creates a default constructor."," The compiler creates a default constructor only when there are no other constructors for the class."]
视锥台（Frustum）
