降温呗!
一些实验是为了降低酶的活性,如提取RNA等
一些是为了减少实验过程中产生的热,如超声波细胞破碎等
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- 1The successful space walk of Zhai Zhigang is helpful to___a space station
- 2Doing morning exercise is good for our health.Every morning you can see a lot of （36）,men and women,young and old （37）ex
- 3已知函数f(x)=2-x/x+1 求其对称中心.
- 42分之1乘（a＋b)平方
- 5已知a,b,c,是三个有理数,且a口+b口+c口=ab+ac+bc试说明:a=b=c
- 6I just want you jappy
- 7两车同时从甲乙两站相对开出,第一次两车在距乙站58千米处相遇,相遇后两车继续前行,各自到达对方车站后立即返回,第二次在距甲站36千米处相遇.甲乙两站相距多少千米?
- 8传染问题公式?初三上数学
- 9when did move to the house you live in now?
- 10she is better than anyone in her class 为什么错误,请改正