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【单选题】
RC文氏桥振荡电路的起振条件是,放大器的放大倍数Au>( )。A.
1/3
B.
3
C.
1/2
D.
2
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反馈参考答案：
举一反三
【单选题】某食品厂为增值税小规模纳税人,2012年8月购进一批模具,取得的增值税普通发票注明金额4000元;以赊销方式销售一批饼干,货已发出,开具了普通发票,金额60000元,截至当月底收到50000元货款。当月该食品厂应纳增值税( )元。
A.
776.31
B.
1067.57
C.
1456.31
D.
1747.57
【单选题】在安全工作领域，指出“每一起严重事故的背后，必然有29次轻微事故和300起未遂先兆以及1000起事故隐患。”的是（ ）。
A.
海恩法则
B.
墨菲定理
C.
冰山理论
D.
干酯模型
【单选题】Most successful applicants will have to spend time working in different countries.
A.
Right
B.
Wrong
C.
Doesn't say
【单选题】'You realize that you were driving at 100mph, don't you?' 'No, officer, I may not have been. This car can't do more than '
A.
will not
B.
cannot
C.
might not
D.
could not
【单选题】听力原文：Six. What does the man decide to take Tracy? Man: I'm going to see Tracy in hospital, but I can't think of what to take her. People always take flowers ... Woman: ... so she'll have lots already ...
A.
B.
C.
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