题目内容

平皿法的检测结果常大于药物中实际存在的微生物数（）

A. 对
B. 错

查看答案

搜索结果不匹配？点我反馈

更多问题

Fill in the blanks based on the given words in their proper forms.1 Many shops will be forced to close when the new supermarket opens. (locally)2 The populationof that country is 500 per square mile.(adverse)3 We need aof ten people to play this game.(mini)4 The busy traffic entrance was a to pedestrians. (hazard)5 The factory closure is inevitable. (seem)

Complete the following sentences based on the information given in Chinese.1. I've never met my cousin again (自从他离开南京).2. (下学期开始前), you each need to make some preparations for the course.3. (小明刚抵达飞机场), it began to rain.4. We talked (我们打牌时).5. I decided to buy the book (我看到它的那一刻).

为什么说商品学究的中心内容是商品质量？（可以联系商品学的研究对象来探讨。）

商品学的研究任务是什么？