科技三项费用是指()。
A.新产品试制费
B.新技术开发费
C.中间试验费
D.新技术试验费
E.重要科学研究补助费
参考答案：A, C, E
—Hi, Vince, can you come to my party?
—________ , I have too much homework to do. I'm so busy. [ ]
A. I'm sorry
B. That's too bad
C. I'd love to
D. Good idea
ONU以太网业务不通，简述分析思路。
