皮皮学,免费搜题
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搜题
【单选题】
氯解磷定解救有机磷酸酯类中毒的机制是
A.
阻断 M 胆碱受体
B.
阻断 N 胆碱受体
C.
使失去活性的乙酰胆碱酯酶复活
D.
直接对抗乙酰胆碱
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举一反三
【单选题】The author notes that in the seventeenth-century New England_______.
A.
Puritan tradition dominated political life.
B.
intellectual interests were encouraged.
C.
Politics benefited much from intellectual endeavors.
D.
intellectual pursuits enjoyed a liberal environment
【单选题】当硅二极管加上0.4V正向电压时,该二极管相当于 。
A.
很小的电阻
B.
很大的电阻
C.
短路
D.
绝对开路
【单选题】当硅二极管加上0.4V正向电压时,该二极管相当于( )
A.
小的电阻
B.
很大的电阻
C.
短路
D.
电阻
【单选题】The author holds that in the seventeenth-century New England
A.
Puritan tradition dominated political life.
B.
intellectual interests were encouraged.
C.
Politics benefited much from intellectual endeavors.
D.
intellectual pursuits enjoyed a liberal environment.
【单选题】当硅二极管加上 0.4V 正向电压时,该二极管相当于( )
A.
很小的电阻
B.
很大的电阻
C.
短路
D.
电阻
【单选题】当硅二极管加上0.4v正向电压时,该二极管相当于( )
A.
很小的电阻
B.
很大的电阻
C.
短路
D.
电阻
【单选题】In the seventeenth century English inns set _______ for accommodations in other parts of Europe.
A.
the mode
B.
the way
C.
the standard
D.
the taverns
【单选题】Wuyi Rock Tea began in the _____, made popular in the Qing Dynasty, and then in the seventeenth Century was exported to Western Europe, universally.
A.
Tang Dynasty
B.
Song Dynasty
C.
Qing Dynasty
D.
Ming Dynasty
【单选题】Where was the main staircase located in a seventeenth-century house?
A.
In the porch
B.
In the hall
C.
In the parlor
D.
In the bedroom
【单选题】输入 100Hz 脉冲信号,要获得 10H Z 的输出脉冲信号需要用多少进制计数器实现( )
A.
100
B.
10
C.
50
D.
5
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