以下哪条不是创伤发生后24小时内死亡的重要原因()
A.窒息和误吸导致气道阻塞
B.大出血
C.大血管的严重撕裂伤
D.高位脊髓损伤
E.感染、败血症
参考答案:E
They landed safely on the island in the Pacific.Everything went on better than________.[ ]
A. expected
B. expecting
C. expectation
D. to expect
何谓刚性基础?刚性基础有什么特点?