变应性鼻炎时,鼻粘膜受刺激后产生神经肽类物质有()
A.IL-4
B.IL-6
C.P物质
D.降钙素基因相关肽
E.IL-2
参考答案:C, D
Explain the meaning of the following terms with regard to the law of agency, providing specific examples within the context of company law:
(c) ostensible/apparent authority. (4 marks)
在下列网络拓扑结构中,中心结点的故障可能造成全网瘫痪的是( )。
A.星型拓扑结构
B.环行拓扑结构
C.树型拓扑结构
D.网状拓扑结构