机体抵抗病原微生物感染的功能称为()
A.免疫监视
B.免疫自稳
C.免疫防御
D.免疫识别
E.免疫耐受
参考答案:C
With reference to the Companies Law Cap. 113, describe:
(a) the procedure for appointment and removal of company auditors; (5 marks)
调制解调器(Modem)的功能是实现( )。
A.数字信号的编码 B.数字信号的整形C.模拟信号的放大 D.模拟信号与数字信号的转换