去甲肾上腺素可用于()
A．支气管哮喘
B．急性肾衰竭
C．过敏性休克
D．Ⅱ、Ⅲ度房室传导阻滞
E．稀释后口服治疗上消化道出血
参考答案：E
The Unified Modeling Language is a standard graphical language for modeling object-oriented software （） can show the behavior of systems in terms of how objects interact with each other.
A．Class diagram
B．Component diagram
C．Sequence diagram
D．Use case diagram
颈神经有几对
A．4对B．7对C．12对D．5对E．8对
