【单选题】病人男性,55岁,肝硬化病史10年,因反复发生上消化道出血而行门奇断流术。术后病人烦躁,幻视,进而昏迷。该病人意识出现障碍最可能的原因是
【单选题】不承受冲击载荷,传动功率较小,也没有特殊要求的齿轮,常用的材料是( )钢
【单选题】How were the police able to prove that Joe had robbed the bank?
A.
The raid had been photographed by hidden cameras.
B.
Some watchmen had seen the raid.
C.
The bank teller proved that Joe was the robber.
D.
Some monitors had been installed nearby.
【简答题】在图 E.3 所示多谐振荡器中,如果 U DD = 9 V , R 1 = 10 k W , R 2 = 2 k W , C = 470 pF 。试求电路的振荡周期,振荡频率和方波的占空比;如果不改变振荡频率,而要改变脉冲宽度,应该怎么办?
【单选题】病人男性,55岁,肝硬化病史10年,因反复发生上消化道出血而行门静脉断流术。术后病人烦躁,幻视,进而昏迷该病人意识出现障碍最可能的原因是()
【单选题】How were the police able to prove that Joe had robbed the bank?
A.
The raid had been photographed by hidden cameras.
B.
Some watchman had seen the raid.
C.
The bank teller proved that Joe was the robber.
D.
Some monitors had been installed nearby.