【单选题】用以说明被萃取物的被萃取完全程度的基本参数为( )。
【单选题】I have some pictures , would you like to have a look ?
【单选题】I have some( pictures) to share with you.
【单选题】I have found some pictures of the most interesting places ______ you can visit during the winter holidays.
【单选题】I have found some pictures of the most interesting places______ you can visit during the winter.
【单选题】I have found some pictures of the most interesting places ___ you can visit during the winter holiday.
【单选题】I have some pictures from our trip _________ Beijing. [ ]
【单选题】处于对数生长期的细菌其主要的特点是( )
【简答题】(15分 ) 编写程序显示由符号组成的三角形图案。程序运行后,用户输入三角形的行数和构成三角形的符号,然后程序显示图形。程序运行效果如下图所示。