人的心理成熟的标志是心理方面具有独立自主的______。
参考答案：自我意识
We the Chinese are not to be ______, ________the situation is. [ ]
A. won; however disastrous
B. defeated; whatever disastrous
C. beaten; whatever disastrous
D. lost; however disastrous
气管插管病人用人工呼吸器时，套管内应注入的空气量为（）
A.1～2ml
B.3～5ml
C.5～7ml
D.8～12ml
E.15～20ml
