软包装
参考答案:
是指在充填或取出内容物后,容器形状可发生改变的包装。
下列液体中哪种是等渗液
A.11.2%乳酸钠
B.1:1液
C.2:3:1液
D.1.4%碳酸氢钠
E.4:3:2液
We have reached a point ______ a change is needed. [ ]
A. when
B. with which
C. why
D. where