单选题 All the cars are tested for {{U}}defects{{/U}} before leaving the factory.
  • A. functions
  • B. faults
  • C. motions
  • D. parts
【正确答案】 B
【答案解析】[解析] 考查名词。题干划线词defect意为“缺陷”，所以正确答案为B。