DSS中_______是面向问题的程序,而_______则是面向算法的程序。
参考答案:模型、方法
单句改错,下列各句的划线部分都只有一处错误。请指出来并加以改正。
( )1.Can you help Tom and I?
A B C D
( )2.My mother tell us a story everyday.
( )3.His uncle often looks books at home.
( )4.Is your Chinese teacher old and young ?
( )5.Liu Ling's sister are a new teacher .
液化人员要严格控制装料系数为(),不得(),以免发生危险。