天然橡胶中含水量过多,生胶易霉变,硫化时会产生海绵等。但()的水分,加工过程中可除去。
A、小于10%
B、小于1%
C、小于5%
D、小于0.1%
参考答案:B
— How was your Spring Festival Holiday in Hainan?
— Really wonderful! I have never had _____ one before. [ ]
A. a very pleasant
B. a more pleasant
C. a most pleasant
D. so a pleasant
讲堂“整齐严肃”四字是谁所作()
A、欧阳厚均
B、欧阳询
C、欧阳正焕
D、欧阳守道