【简答题】路由选择算法主要分为自适应式和非自适应式,前者又称为(__)算法,后者又称为(__)算法。
【单选题】可以通过污染土壤污染食品,目前毒性最强的化学物质的是()。
【单选题】证券按照它的() ,可以分为股票、债券和其他证券三大类。
【单选题】Why can't the woman go to the party?
A.
Because she has got an appointment.
B.
Because she has to work.
C.
Because she wants to eat in a new restaurant.
【单选题】Why won't the woman go to the party?
A.
Because she has got an appointment.
B.
Because she has go to school.
C.
Because she has to work.
【判断题】毛乌素沙地被联合国环境署称为“中国即将消失的沙漠”
【单选题】下列对化学物质的理解正确的是( )
D.
化学物质使我们的生活变得绚丽多彩,但有些化学物质给人类带来灾难