【单选题】— It's bright enough in the room. Would you mind _____ the lights? — No problem. [ ]
【多选题】关于三腔二囊管压迫止血的护理,下列哪些正确()
D.
压迫期间,若患者出现呼吸困难,应立即抽出三腔二囊管内气体,以免发生窒息
【单选题】已知集合M满足 ,则符合题意的集合M的子集最多有()
【单选题】关于理想电压源和理想电流源,下面的叙述正确的是()。
B.
理想电压源和理想电流源等效变换后内部是不等效的
C.
理想电压源和理想电流源等效变换后外部是不等效的
【单选题】Which of the following statements about expressionism is NOT true?
A.
Expressionism originated in the U.S.
B.
Expressionism was a modernist movement that started at the beginning of the 20th century.
C.
Its typical trait is to present the world solely from a subjective perspective.
D.
Expressionist artists sought to express meaning or emotional experience rather than physical reality.
【单选题】下列关于优先发展城市公共交通描述错误的是( )
【单选题】下面关于受控电压源与独立电压源的叙述,正确的是( )。
A.
独立电压源的大小取决于电路的结构及元件的参数
B.
受控电压源反映了同一支路电压(流)与电流(压)之间的关系
D.
独立电压源的电压不受电路结构及元件参数的影响