一饱胃后脑外伤清醒病人拟行急诊手术。病人呕吐后出现呼吸困难,最可能的原因是()
A.误吸
B.肺栓塞
C.支气管痉挛
D.肌松药的残余作用
E.全麻药的中枢性呼吸抑制
参考答案:A
In his speech, Premier Wen Jiabao points out that creativity is ______it takes to keep a nation highly competitive .
A.how
B.what
C.which
D.that
复元丹功效与作用