鼻咽癌常见的临床表现是（）。
A.咯血
B.鼻塞
C.耳鸣
D.回吸性涕血
E.颈部包块
参考答案：B, C, D, E
In relation to company law:
(b) Explain and distinguish between:(i) unlimited companies; (2 marks)(ii) companies limited by guarantee; (2 marks)(iii) companies limited by shares. (3 marks)
ATM技术的主要特征有：信元传输、面向连接、 【20】 和服务质量。
