【单选题】某产品经三道工序加工而成,原材料分工序在各道工序开始时一次投入,各工序材料消耗定额为10千克、20千克、20千克,第三工序在产品的完工率为()
【判断题】所有碳源物质既可以为微生物生长提供碳素来源,也可以提供能源
【判断题】所有碳源物质既可以为微生物生长提供碳素来源,也可以提供能源。
【单选题】---- What do you think of the book ? ---- Oh excellent. It’s worth _________ a second time.
【单选题】What is NOT one of the ways in which people get their news?
A.
Readers get their news by reading evening newspapers.
B.
Many Americans read their daily newspaper while drinking coffee.
C.
While driving to work, people have a glance at their newspaper.
D.
Many Americans watch their morning news program on television.
【单选题】What was most difficult about coming to China?
A.
Finding a good restaurant
B.
Learning to read and write the language
C.
Pretty nervous feeling