搜题
问题   更新时间2023/4/3 12:59:00

8.
检索钙(calcium)用于食品(food)或者饲料(feed)的添加剂(additive)的英文信息,检索式是:()
(A) calcium and food or feed and additive
(B) (calcium and food or feed) and additive
(C) calcium and(food or feed)and additive
(D) (calcium and food) or (feed and additive)

参考答案:C]
王老师:19139051760(拨打)