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【多选题】
下面关于无伴电压源的说法，正确的是（ ）。A.
无电阻与之串联的电压源称为无伴电压源
B.
选无伴电压源的负极作为参考结点，方便列写结点电压方程
C.
流过无伴电压源的电流不随外电路的变化而变化
D.
无伴电压源是理想电压源
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【简答题】Sometimes, the st ideas are the best. For example, to absorb heat from the sun to heat water, you need large, flat, black suces. One way to do that is to build those suces specially, on th...
【简答题】Sometimes ideas are more p______________(强大) than any amount of money.
【简答题】Sometimes ideas are more_______ than any amount of money. 有时候思想比任何数目的一笔钱都更强大。
【单选题】The students have been working hard on their lessons and their efforts (reward) with success in the end.
A.
will be rewarded
B.
are rewarded
C.
were rewarded
【简答题】Sometimes, the st ideas are the best. For example, to absorb heat from the sun to heat water, you need large, flat, back suces. One way to do that is to build those suces specially, on the...
【判断题】一家快餐公司通过视频分析等候队列的长度,然后自动变化电子菜单显示的内容。如果队列较长,则显示可以快速供给的食物;如果队列较短,则显示那些利润较高但准备时间相对长的食品。这是基于大数据分析的结果。
A.
正确
B.
错误
【简答题】Sometimes, the st ideas are the best．For example, to absorb heat from the sun to heat water, you need large, flat, black suces．One way to do that is to build those suces specially, on the ...
【单选题】She is a strange girl and sometimes her ideas are hard _______
A.
to be understood
B.
to understand
C.
understanding
D.
understood
【单选题】In the end the masses will lose faith in them, which will hamper their development.
A.
promote
B.
lull
C.
facilitate
D.
hinder
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