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【判断题】
In the actual voltage source model, which is composed of ideal voltage source and resistance Rs in series, if the resistance Rs is larger, the open-circuit voltage of the model will be smaller. ( )由理想电压源与电阻RS串联构成的实际电压源模型中，若电阻RS越大，则该模型的开路电压就越小。 （ ）A.
正确
B.
错误
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皮皮学刷刷变学霸
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【单选题】Hurry up! The play ( )for ten minutes.
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【单选题】Hurry up !The play for ten minutes.
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has begun
B.
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D.
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【简答题】剂量 n. d_ _ _
【简答题】目的地 n. d_ _ _ _ _ _ _ _ _ _
【单选题】Hurry up! The play ___ for ten minutes.
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has begun
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was begun
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D.
began
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【简答题】执照 n. d_ _ _ _ _ _
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has been on
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C.
had begun
D.
began
【简答题】争论，辩论 n. d_ _ _ _ _
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