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【单选题】
就放大作用而言,射极输出器是一种( )。A.
有电流放大作用而无电压放大作用的电路
B.
有电压放大作用而无电流放大作用的电路
C.
电压和电流放大作用均没有的电路
D.
既有电流放大作用又有电压放大作用的电路
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反馈参考答案：
举一反三
【单选题】动脉血H + 浓度升高兴奋呼吸是通过( )
A.
刺激中枢化学感受器
B.
刺激颈动脉体、主动脉体化学感受器
C.
刺激颈动脉窦、主动脉弓压力感受器
D.
刺激脑桥呼吸中枢
E.
直接刺激呼吸肌
【简答题】重型霍乱患者治疗关键是（ ）
【单选题】进见在个别访谈中非常重要，进见时需要注意的方面不包括（）。
A.
服饰打扮庄重大方
B.
有条件的尽可能让人引见
C.
要根据进见的人决定自己的态度
D.
进见时要注意礼节，给人良好的印象
【简答题】“Sesame Street” has been called “the longest street in the world”. That is because the television program by that name can now be seen in so many parts of the world. That program became one of America...
【简答题】“Sesame Street” has been called “the longest street in the world”. That is because the television program by that name can now be seen in many parts of the world. That program became one of American e...
【简答题】'Sesame Street' has been called 'the longest street in the world.' That is because the television program can be seen in so many parts of the world. That program became one of America's exports soon a...
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