问题 问答题 简答题

何谓连续发酵?其优点如何?

答案

参考答案:

根据恒浊器或恒化器进行微生物连续培养的原理,应用于大规模工业发酵中的连续培养称为连续发酵。其优点为:高效:可简化单批发酵中进料、出料、灭菌,洗罐等常规操作,节约工时,提高设备利用率;便于仪表控制;产品质量较稳定;节约劳力、动力、热力、使水、电、汽的负荷均匀合理。

改错题

短文改错(共10小题;每小题1.5分,满分15分)

此题要求改正所给短文中的错误。对标有题号的每一行作出判断:如无错误,在答题卡相应的位置上画一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:

此行多—个词:把多余的词写在答题卡相应的位置上,用斜线(\)划掉。

此行缺—个词:在答题卡相应的位置上写出该加的词,并附带前(后)词。

此行错一个词:在答题卡相应的位置上写出该错词和改正后的词。

注意:原行没有错的不要改。

An old friends of mine from Beijing telephoned from                  

小题1:____________

the airport to tell me that he has arrived. I was still at the               

小题2:____________

office at that time. I told him which my house was and that I             

小题3:___________

had left the key under the doormat. I asked for him to make              

小题4:___________

him at home. Two hours later, I telephoned him. He told                 

小题5:___________

me he couldn’t find the key under the doormat, and he                   

小题6:___________

had no difficulty in entered my house, because the window               

小题7:__________

of my living room was just by the apple tree, and he had                 

小题8:___________

climbed in. I was surprised: There has no apple tree in front of             

小题9:___________

my living room, but there is one in front of my neighbour’s.               

小题10:____________

名词解释