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【单选题】
串联负反馈可使 ( ) 的输入电阻增加到开环时的( 1 + AF )倍A.
反馈环内
B.
反馈环外
C.
反馈环内与环外
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反馈参考答案：
举一反三
【单选题】According to the author, it is hard to imagine a workable society without ______.
A.
enough money
B.
a recognized authority
C.
examples
D.
changes
【单选题】He is patient enough ______ for a long time without ______ angry. [ ]
A.
waiting, getting
B.
waiting, get
C.
to wait, to get
D.
to wait, getting
【单选题】关于测定内生肌酐清除率标本采集的方法,下列哪项错误
A.
患者连续3天低蛋白饮食
B.
收集24h尿量，并加入甲苯3～5 mL以防腐
C.
采同一天的空腹血，无需抗凝
D.
患者必须充分饮水
E.
避免剧烈运动
【简答题】Without enough knowledges， you can never learn well.
【单选题】I can't afford it. I have ______. [ ]
A.
no enough money
B.
no money enough
C.
enough money
D.
not money enough
【单选题】Without enough evidence, the man could not _____ himself to be innocent(无辜的 ) . [ ]
A.
say
B.
make
C.
prove
D.
tell
【简答题】It is difficult for a (speak) ______ to speak loudly enough without a microphone.
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