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【单选题】
某同学利用如图所示的电路描绘小灯泡的伏安特性曲线。在实验中，他将滑动变阻器的滑片从左端匀速滑向右端，发现电流表的指针始终在小角度偏转，而电压表的示数开始时变化很小．但当滑片接近右端时电压表的示数迅速变大。为了便于操作并减小误差，你认为应采取的措施是（ ）。A.
换用最大阻值更大的滑动变阻器，将导线a的M端移到电流表“3”接线柱上
B.
换用最大阻值更大的滑动变阻器，将导线b的N端移到电流表“0．6”接线柱上
C.
换用最大阻值更小的滑动变阻器，将导线n的M端移到电流表“3”接线柱上
D.
换用最大阻值更小的滑动变阻器，将导线b的N端移到电流表“0．6”接线柱上
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【单选题】The term 'disruptive technology' is popular, but is widely misused. It refers not simply to a clever new technology, but to one that undermines an existing technology, and which therefore makes life v...
A.
states the popularity of the term
B.
indicates a clever new technology
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undermines an existing technology
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