8051单片机内部有()个16位定时/计数器。
A.1
B.2
C.3
D.4
参考答案:B
—Why didn't you hand in your exercise book?
—I remember _____ it to you just now. [ ]
A. give
B. gave
C. giving
D. to give
( )应考虑关联效果,对项目涉及的所有社会成员的有关效益和费用进行全面识别。
A.社会评价
B.财务分析
C.项目分析
D.经济分析