【简答题】美拉德反应的初期阶段,最初产物的第一步是 ______。
【单选题】谈判中可努力争取或作出让步的范围指的是哪一种谈判具体目标()
【单选题】听力原文:W: I am totally exhausted. I stayed up the whole night studying for the final examination. M: What have you done during your previous study time? Q: What does the man imply? (13)
A.
She has wasted much study time.
C.
Staying up is bad for health.
D.
She is an excellent student.
【单选题】一料一档如果原料经加工处理后只有一种净料,计算时净料成本等于()和加工后半成品质量的比值。
【单选题】Failureson final exams always make students ______ their performance.
【单选题】一料一档如果原料经加工处理后只有一种净料,厨房采购土豆20千克计价42元,土豆的净料成本为3元/千克,则经加工后得到的净土豆为( )千克。
【简答题】一离散信源由 0、1、2三个符号组成,它们出现的概率分别为1/4、1/4、1/2,且每个信号的出现都是独立的,试求某消息的信息量011122000021100022220012010200220110002210201的信息量。