肝硬化最常见的并发症是（），最严重的并发症是（）。
参考答案：上消化道出血；肝性脑病
He ____ give up the dictionary than a child would give up a new toy. [ ]
A. will no longer
B. would rather
C. had better
D. would no more
气相色谱法测定总烃和非甲烷烃时，如何保证测定的准确度？
