单选题 If you don't understand how to install the equipment you have purchased, please call one of our customer service representatives for ______.
  • A. assimilation
  • B. assistance
  • C. manipulation
  • D. derivation
【正确答案】 B
【答案解析】[解析] 词汇：名词 1．这是一道词汇选择题，选项均为名词。 2．原文意思是“如果不了解设备安装的方法，请联系客服寻求帮助”。因此B．assistance为正确选项。