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【单选题】
采用单结晶体管电路晶体管时间继电器,其电路由( )等部分组成。A.
环节.鉴幅器.输出电路.电源和指示灯。
B.
主电路.辅助电源.双稳态触发器及其附属电路
C.
振荡电路.记数电路.输出电路.电源
D.
电磁系统.触头系统
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反馈参考答案：
举一反三
【简答题】扩张小动脉，小静脉，作用强快短的扩血管药物是 查看材料
【单选题】In the author’s opinion，“When you got nothing，you got nothing to lose”is______．
A.
a prevailing misconception about the poor’s condition in economic recession
B.
a famous saying illustrative of the rich’s huge loss in economic recession
C.
descriptive of the mainstream view that the poor should be given more aid
D.
indicative of the huge wealth gap between the rich and the poor in America
【单选题】There is in today’s homework.
A.
difficult nothing
B.
difficult anything
C.
nothing difficult
D.
anything difficult
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