连接PC机扩展槽的总线是PC机的( )。
A.外部总线
B.内部总线
C.局部总线
D.系统总线
参考答案:D
— Have you ever been to Shanghai, Mary?
— Yes. I _____ there for three clays with my parents last month. [ ]
A. have gone
B. have been
C. went
D. was
男,42岁,患急性重症胰腺炎并发休克36小时,经抗休克治疗后行胰腺和其周围坏死组织清除、腹腔引流术。术后心率106次/分,血压96/60mmHg(12.8/8kPa),中心静脉压10cmHO(98kPa)。呼吸频率22次/分,动脉血氧分压66mmHg(11.5kPa),尿量10ml/h,尿比重1.002。此病人目前最紧急的并发症是()
A.心功能不全
B.肺功能衰竭
C.肾衰竭
D.血容量不足
E.体内抗利尿激素分泌过多