【判断题】染色布半制品对白度的要求比印花半制品相对较高。
【单选题】听力原文:M: How long has Alex been working on his degree, five years? W: At least that long. Q: What is the woman saying about Alex? (17)
A.
He began his studies more than five years ago.
B.
He will be working for at least five more years.
C.
He has taken the least time of anyone to finish.
D.
He finished his degree a long time ago.
【单选题】气相色谱分离主要是利用各组分在固定液上的()不同。
【单选题】气液色谱分离,主要利用各组分在固定相上的()差异。
【单选题】瘫痪在运动形式上可分为几种类型,但不包括: