【判断题】相对而言,亚临界压力以上的锅炉蒸汽污染的主要原因是蒸汽 直接溶解某些盐类而使蒸汽含盐 。
【简答题】For the following network, d etermine the input impedance, output impedance and the voltage gain.
【单选题】The input impedance of a BJT is ( ).
D.
a combination of resistive, capacitive, and inductive
【单选题】When comparing the common emitter and the common collector amplifiers, the input impedance of the common ( ) is much larger and the output impedance of the common ( ) is much smaller.
【简答题】患者,男性,58岁,有糖尿病史14年,有吸烟史,近日体检发现肌酐350umol/L,GFR55ml/(min•1.73m 2 ),Hb90g/L,尿蛋白(++),BP165/95mmHg。病人主诉近日来有腰酸、乏力、夜尿增多现象,但未有重视。医生诊断为慢性肾脏病(CKD),糖尿病肾病。
该期的治疗原则是什么?
【单选题】The input impedance in the figure is_______