下列关于外科疾病总的发病机理的叙述，错误的是（）
A.气血凝滞
B.经络阻塞
C.营气不从
D.脏腑失和
E.热毒火毒
参考答案：E
— Sorry, sir．I won’t see you off at the airport, my mother has caught a bad cold．
— ________．
A．Yes, I agree
B．Yes, you are quite right
C．I’m sorry to hear that
D．I’m feeling sick
试简述整体刚度矩阵的性质。
