The most important reason for maintaining stock cultures is
A: to have a ready supply of microorganisms
B: to maintain control of the fermentation process
C: to maintain the genetic strain used in the reaction
D: to use for patent identification
A: to have a ready supply of microorganisms
B: to maintain control of the fermentation process
C: to maintain the genetic strain used in the reaction
D: to use for patent identification
举一反三
- The car wants ______. A: to maintain B: to be maintained C: to maintaining D: maintaining
- Eastern cultures’ understanding would define communication as a process where all parties are searching to develop and maintain a social relationship.
- An important social use of language is the inter-personal function, by which people establish and maintain their status in a society.（）
- No.2.What’s most important for her now is to maintain a good ____ and good eating habits. (mental)
- It is a pleasure to _____ a friendship for a lifetime. A: make B: making C: maintain D: maintaining