【单选题】电路中有a、b两点,已知a点电位为Va=8V,b点电位为Vb=6V,则ab两点的电压Uab=为( )
【单选题】已知Uab=10V,Va=8V,则Vb等于
【单选题】Are there______ books in the bag? No, There aren't _____ books in it, but there are_____ pens in it. [ ]
【单选题】There are _______ in the reading room, but many of those books aren’t _______ to read.
A.
enough books, enough easy
B.
enough books, easy enough
C.
books enough, easy enough
D.
books enough, enough easy
【单选题】There are _____ in the reading room, but many of those books aren't _____. [ ]
A.
enough books; enough easy
B.
enough books; easy enough
C.
books enough; easy enough
D.
books enough; enough easy
【单选题】应用三腔二囊管治疗食管胃底静脉破裂出血,正确的是
E.
放置三腔二囊管期间应注意避免因误吸引起的吸入性肺炎
【多选题】患者男,67岁。经颈内静脉放置肺动脉导管,RAP20mmHg,CI2.0L·min -1 ·m -2 ,PAP25/13mmHg,PCWP10mmHg。关于经颈内静脉置入肺动脉导管,叙述正确的是()
【简答题】患者,男,69岁。经颈内静脉放置肺动脉导管,RAP20mmHg,Cr2.0L/(min·m2),PAP25/13mmHg,PCWP10mmHg 最可能的诊断是()。A.左房室瓣狭窄 B.房间隔缺损 C.肺动脉瓣狭窄 D.左心功能不全 E.容量过负荷 关于经颈内静脉置入肺动脉导管,下列叙述正确的是()。A.—般插入深度达13cm,管端可达右心房 B.气囊充气后,每次推进导管3~5cm C.当导管进入...
【单选题】电路中有a、b两点,已知a点电位为Va=8V,b点电位为Vb=6V,则ab两点的电压Uab=为( )
【单选题】已知空间有a、b两点,电压Uab=6V,a点电位为Va=2V,则b点电位Vb为( )