【简答题】strict/severe (1) In a_______ sense, frost refers simply to a temperature of zero degrees Celsius or less. (2) This is a school for children with_________ learning difficulties. (3) My parents were ve...
【单选题】依据硫元素的化合价判断,下列物质中只具有还原性的是( )
【简答题】Our boss is very strict about punctuality. We ____________ arrive on time. 2. The dress code here is quite informal. For example, men ____________ wear a tie. 3. You _________ eat or drink near the co...
【单选题】同工酶是指( )
D.
同工酶是由两个或两个以上相同亚基组成,并有不同亚型
E.
在相同的条件下,同工酶对同一底物的K m 相同