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【判断题】
谐振现象:是指含有RLC 的无源单口网络在正弦激励作用下, 对应于某些频率时,电路的阻抗(导纳)虚部为0 而出现端口电压、电流同相位。A.
正确
B.
错误
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举一反三
【单选题】The Foreign Service is a branch of the Department of State．
A.
center
B.
division
C.
root
D.
base
【简答题】Which of the following is true about Pfizer? [A] Pfizer is a branch of the drug companyParke-Davis. [B] Pfizer has failed in its attempt toconceal certain information. [C] Pfizer is a part of the Drug...
【单选题】Which of the following is true about Pfizer?
A.
Pfizer is a branch of the drug company Parke-Davis.
B.
Pfizer has failed in its attempt to conceal certain information,
C.
Pfizer is a part of the Drug Industry Document Archive.
D.
Pfizer has done nothing illegal since it acquired Parke-Davis.
【单选题】Spleen a. is a branch of
A.
celiac trunk
B.
superior mesenteric artery
C.
superior vena cava
D.
inferior mesenteric artery
【单选题】女31岁,第一胎39周见红,规律宫缩,临产后行灌肠的适应症是
A.
胎膜已破，先露高位为-2，胎心音正常
B.
阴道出血，量较多
C.
产程顺利，估计1小时内胎儿即可娩出
D.
胎膜未破，宫颈扩张2cm，先露高位为+1
E.
臀先露，胎心好
【简答题】经济学中短期和长期划分取决于时间长短。( )
【简答题】American Structuralism is a branch of diachronic linguistics that emerged independently in the United States at the beginning of the twentieth century.
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