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【单选题】
被狗、猫等动物咬(抓)伤后,应立即到医疗门诊接种人用狂犬病疫苗。第一次注射狂犬病疫苗的 最佳时间是被咬(抓)伤后的( )小时内A.
6
B.
12
C.
24
D.
48
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【单选题】以下不属于串联电路的特点的是( )。
A.
串联电路中流过每个电阻的电流都相等： I = I 1 = I 2 = I 3…… = I n。
B.
等效电阻：几个电阻串联的电路，可以用一个等效电阻 R 替代： R = R 1 + R 2 + R 3 + …… + R n。
C.
电路两端的总电压等于各个电阻两端的电压： U = U 1 = U 2= U 3= …… = U n（分压原理）。
D.
串联电路总功率等于各用电器功率之和： P 总 = P 1 + P 2 + P 3 + …… + P n。
【简答题】A popular student in her small high school, Katie started college, expecting to do well in her courses and be best friends with her roommates. But things didn’t turn out that way. Psych 101, the cours...
【单选题】-I hear mom is coming. When shall we meet her at the station? -Her train started 2 hours ago, and it ________ reach at 3 pm. [ ]
A.
should
B.
could
C.
must
D.
can
【简答题】Elizabeth Mowbray, accompanied by her daughter, started the journey from Framlingham a few weeks later.
【单选题】Doctors gave the serious anemia patient a series of injections and started her on an ______ course of vitamins.
A.
urgent
B.
ardent
C.
evident
D.
emergent
【简答题】将3Ω的电阻和12.75mH的电感串联接在220V、50Hz的电源上,试求: (1) 感抗XL、阻抗Z、电路的电流的有效值I、电感上的电压UL、电阻上的电压UR,这两个电压加起来是否等于总电压220V? (2) 电路的有功功率P、无功功率Q、视在功率S及功率因数。
【单选题】What happened in the end?
A.
She started an argument with her neighbors.
B.
Her neighbors came down quietly, but she stayed awake for quite a long time.
C.
Her neighbors refused to listen, so the police were called in.
D.
She couldn't fall asleep again for the rest of the night.
【简答题】A popular student in her small high school, Katie started college expecting to do well in her courses and be best friends with her roommates. But things didn’t turn out that way. Psych 101, the course...
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