在互联网的七层协议中，哪一层主要负责数据的传输和路由选择？

In a hypothetical scenario, a researcher claims that a specific vaccine causes a rare neurological disorder. If this claim is based on a study with significant methodological flaws, what is the most appropriate response from the scientific community?

以下哪个不是短视频平台的特点？

在Java中，假设存在如下代码片段：`String str1 = "abc"; String str2 = new String("abc"); String str3 = "ab" + "c";`，关于这些字符串对象，下列哪个断言是正确的？

下列表达式中，优先级最高的运算符是：