[单选] 盲炮应（）。

量纲指数全部等于0的物理量称为无量纲数。（） 幼儿园期间是高结构化的教学比较重要还是低结构化的游戏对儿童发展更有利？谈谈你的看法。 重力坝的工作原理是在水压力及其它荷载的作用下，主要依靠坝体自身 重量产生的抗滑力来满足稳定的要求。 活性污泥 You are an experienced network administrator in an international corporation. One of your clients asks you to configure a network for a financial trading center which requires multiple high-value transactions. And the transactions are very important to the client. In such a situation, which two of the following are basic and most important requirements concerning the configuration? （）(Choose two.) no single point of failure。 determine which protocol to use。 trading database server location。 deterministic response to all failure。 盲炮应（）。