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【单选题】
两个金属膜电阻的标称电阻值与额定功率分别是 100 Ω , 1W 和 200 Ω , 0.5W 。这两个电阻串联时允许通过的最大电流值是 。A.
0.1A
B.
50mA
C.
100mA
D.
0.15A
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【单选题】The campaign slogan” Straight-Talk Express” aims at convincing voters that the presidential candidate is
A.
friendly．
B.
honest．
C.
open．minded．
D.
warm-headed．
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