什么是内应力?按其分布范围可分几类,分别是什么?
参考答案:
内应力是指在没有外力的条件下平衡于物体内部的应力。三类:宏观内应力,微观内应力,超微观内应力。
关于干扰素治疗乙型肝炎的适应证叙述不正确的是
A.HBV在活动性复制中B.肝炎处于活动期C.血液中HBV-DNA浓度低D.黄疸高低可不考虑E.HBeAg(+)
Arabic is written in the opposite direction to English, _____, from right to left. [ ]
A. that is
B. which is
C. what is
D. as it is