Major product categories encompass electronic test and measuring instruments, solid-state components, electronic calculations.

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问题 Major product categories encompass electronic test and measuring instruments, solid-state components, electronic calculations.

选项 A、round
B、include
C、around
D、and

答案B

解析 encompass“包围、包含”；include“包括”；round作为介词解释为“围绕、在……周围”，作为名词可意为“一连串的(事件等)、圆”；around副词、介词“到处、周围”，主要产品分类包括电子测试、测量仪器、组件、电子计算器。

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