给出下列水泵型号中各符号的意义：
14 ZLB—70

以下哪项是展神经功能

未知题型以下哪项是展神经功能

计数器的计数值使用后必须通过（）指令复位清零。

未知题型计数器的计数值使用后必须通过（）指令复位清零。

Regional economic integration involves agreements among...

单项选择题Regional economic integration involves agreements among countries in a geographic region to reduce, and ultimately remove, tariff and nontariff barriers to the free flow of goods, services, and factors of production between each other. （ ）