【简答题】数学模型,对于现世界的一个特定的对象,为了某一特殊的目的,根据其内在规律和外部条件,做出必要的简化假设,运用适当的数学工具得到的一个( )。
【单选题】人类科技发展历史的启迪表明:促进科技发展的主要因素包括 ( )。
C.
社会宽松环境、科学家奉献精神、世界和平、力学支撑;
D.
科学家努力奋斗、具有追求人生目标的远大理想 ;
【单选题】霍乱的典型病例发病后最常见的症状是:()
【简答题】脱式计算. 3.68-0.82-0.18 3.4÷2.5÷0.4 3.27×99+32.7 [1-( 1 2 + 1 3 )]×36.
【单选题】听力原文:W: This food is terrible. I can't even finish my dinner. M: I know. You think with all the money we pay for room and board, the university could hire a better food service. Where are you headed n...
A.
In the student recreation center.
B.
In the campus dining hall.
C.
In the university bookstore.
【单选题】What I require of you is_____. Y ou should finish the task in 2 hours.