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【单选题】
【辅】 女性，23岁，患急性扁桃体炎，青霉素皮试阳性，治疗该患者用A.
青霉素G
B.
头孢氨苄
C.
红霉素
D.
霉素
E.
头孢唑林
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【简答题】In almost every big university in the United States, football is a favourite sport. American football is different. Players sometimes kick the ball, but they also throw the ball and run with it. They ...
【多选题】题目:一个球从 100 米高度自由落下,每次落地后反跳回原高度的一半;再落下,求它在第 10 次落地时,共经过多少米?第 10 次反弹多高? Sn = 100.0 Hn = Sn / 2 for n in range(2,11): _____________ Hn /= 2 print ('Total of road is %f' % Sn) print ('The tenth is %f met...
A.
Sn = 2 * Hn
B.
Sn -= 2 * Hn
C.
Sn += 2 * Hn
D.
Sn = Sn+ 2 * Hn
【简答题】In almost every big university (大学) in the United States, football is a favourite sport. American football is different. Players sometimes kick the ball, but they also throw the ball and run with it. ...
【简答题】In almost every big university in the United States, football is a favourite sport. American football is different. Players sometimes kick the ball, but they also throw the ball and run with it. They ...
【判断题】训练集是用来训练模型的,百度通过尝试不同的方法和思路使用训练集来训练不同的模型,再通过验证集使用交叉验证来挑选最优的模型,通过不断的迭代来改善模型在验证集上的性能,最后再通过测试集来评估模型的性能。
A.
正确
B.
错误
【单选题】题目：一个球从100米高度自由落下，每次落地后反跳回原高度的一半；再落下，求它在第10次落地时，共经过多少米？第10次反弹多高？Sn = 100.0Hn = Sn / 2for n in range(2,11): _____________ Hn /= 2print ('Total of road is %f' % Sn)print ('The tenth is %f meter' % Hn)
A.
Sn = 2 * Hn
B.
Sn -= 2 * Hn
C.
Sn += 2 * Hn
D.
Sn = Sn- 2 * Hn
【简答题】In almost every big university in the United States, football is a favourite sport. American football is different. Players sometimes kick the ball, but they also throw the ball and run with it. They ...
【多选题】下列关于静息电位的论述，正确的是( )
A.
静息电位都是稳定的静息电位
B.
主要由K + 外流形成
C.
静息电位的大小接近K + 的平衡电位
D.
不同细胞静息电位数值不同
E.
静息电位的数值随细胞外液中K + 的浓度的变化而相应变化
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