单项选择题
As computers, PLCs can perform timing functions (for the equivalent of time-delay relays), drum sequencing, and other advanced functions with far greater accuracy and reliability than what is possible to use electromechanical logic devices.
翻译为:作为计算机,PLC可以执行定时功能(相当于延时继电器)、鼓排序和其他高级功能,与使用机电逻辑器件的精度和可靠性差不多。
A、正确
B、错误