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【单选题】
Paragraph 6 Question What made the situation even worse for the author?A.
The situation was made even worse as the author was barred from the gym team and the monthly ballroom dancing class which she loved so much.
B.
The situation was made even worse as the author was barred from the gym team and the weekly ballroom dancing class which she loved so much.
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举一反三
【单选题】图(a)直流电路中,负载D是非线性电阻器,其伏安特性曲线如图(b)所示,则电压 和电流i值应为
A.
10 V,0.32 A
B.
6 V,0.3 A
C.
3 V, 0.14 A
D.
2 V,0.1 A
【简答题】今有0.5016g BaSO 4 ，其中含少量BaS，用H 2 SO 4 处理使BaS转变为BaSO 4 ，经灼烧后得BaSO 4 0.5024g，求BaSO 4 中BaS的含量。
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