某试液用1cm比色皿测得透光率为了,若用2cm比色皿测定时,透光率的变化将是
A. 增加
B. 减小
C. 不变
D. 提高1倍
E. 降低1/2
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Some lawyers justified almost 100 percent of all marriages in the United States end up
Tarzan’s name is given by the gorilla mother.()
John Smith comes to the New World to do his research on gorillas.()
下列过程中不需要DNA连接酶参与的是
A. DNA复制
B. DNlA修复
C. 重组DNA
DNA修饰
E. 以上结果都错误