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【单选题】
忽略电阻影响,线路传送有功功率的流向取决于( )。A.
首未端电压差；
B.
首未端电压相位；
C.
额定电压等级；
D.
电抗大小。
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【单选题】When Susan got home, her mother looked very happy because ______.
A.
Susan's father had decided to give up smoking
B.
she hadn't seen her daughter for a long time
C.
Susan had bought a nice Christmas present for her
【单选题】32周新生儿，胎膜早破24小时，经阴道分娩出生，出生时呼吸弱，喘息，全身青紫，心率68次/分，气管插管抢救5分钟后好转，Apgar评分1分钟2分，5分钟7分。生后一直反应差，吃奶少，生后第2天出现黄疸，并逐渐加重，生后第4天拒奶，面色青灰，呼吸稍促，体温不升。 最可能的诊断为
A.
新生儿肺炎
B.
新生儿颅内感染
C.
新生儿败血症
D.
新生儿颅内出血
E.
新生儿溶血症
【简答题】阅读理解 One day, Susan goes shopping with her mother. When they get to(到达) the supermarket(超市), Susan is very happy. There are many things and many people in it. Susan’s mother tells her to follow(跟随) he...
【单选题】建筑平面图中相邻两轴线间标注的尺寸为3600,比例为1∶50,量得图中对应线段长为 71mm,则这相邻两轴线间的实际距离为
A.
3600mm
B.
3550mm
C.
72mm
D.
71mm
【简答题】金属离子对酶的作用具有一定的_______，即一种激活剂对某些酶能起激活作用，但对另一种酶可能有抑制作用，有时离子之间还存在着_______。
【简答题】阅读理解。 One day, Susan goes shopping with her mother. When they get to (到达) the supermarket (超市), Susan is very happy. There are many things and many people in it. Susan's mother tells her to follow (跟随...
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