虚性病机是指（）
A.邪气亢盛，正气已衰
B.邪气亢盛，正气未衰
C.正气亏虚，邪气不太盛
D.正气不虚，邪气不太盛
E.邪气亢盛
参考答案：C
.You______ be driven out of the school if you dare to cheat in the exam.
A．should
B．would
C．will
D．shall
简述由微机时钟引起的噪声的发生机理并举出实例和特征。
