散射比浊法的特异性好于透射比浊法,其原理是()。
A.散射比浊法的入射光波长较短
B.检测点接近光源
C.IC的体积大
D.IC的折射率大
E.避免了杂信号的影响
参考答案:E
I think I was at school, _______ I was staying with a friend during the vacation when I heard the news.
A.even so
B.and then
C.so that
D.or else
定张减机区主要缺陷有哪些?