Answer: A. Industrial robots
Analysis: The most important robot in the contemporary robot army is industrial robots.
Industrial robots are multi-joint manipulators or multi-degree-of-freedom robots for the industrial field, which can perform specified, repetitive operations according to pre-programmed programs, or perform freehand operations. Industrial robots are widely used in automobile and auto parts manufacturing, machining industry, electronic and electrical industry, rubber and plastic industry, food industry, wood and furniture manufacturing and other fields.