动态获利性分析（dynamic Profitability Analysis）
Which statement is true？（） [" If only one thread is blocked in the wait method of an object， and another thread executes the modify on that same object， then the first thread immediately resumes execution."," If a thread is blocked in the wait method of an object， and another thread executes the notify method on the same object， it is still possible that the first thread might never resume execution."," If a thread is blocked in the wait method of an object， and another thread executes the notify method on the same object， then the first thread definitely resumes execution as a direct and sole consequence of the notify call."," If two threads are blocked in the wait method of one object， and another thread executes the notify method on the same object， then the first thread that executed the wait call first definitely resumes execution as a direct and sole consequence of the notify call."]
糖果的PH值的测定有哪些方法？
运算符的作用是（）。 ["用于指定对操作数或单元格引用数据执行何种运算","对数据进行分类","将数据的运算结果赋值","在公式中必须出现的符号，以便操作"]
检测系统的基本组成是哪些？
公关案例编写的原则有哪些？
