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【单选题】
如题26第一次迭代中,主元素是:A.
3
B.
6
C.
4
D.
5
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】有关容量瓶的功能介绍正确的是：
A.
是用来量取一定体积液体的量器
B.
是用来盛装溶液的玻璃器皿
C.
是用来准确配制一定体积溶液的量器
D.
是用来溶解固体溶质的玻璃量器
【单选题】He glanced briefly towards her but there was no sign of _________.
A.
loyalty
B.
recognition
C.
request
D.
exploitation
【简答题】It is quite necessary for a qualified teacher to have good manners and ________ knowledge. A) extensive B) expansive C) intensive D) expensive
【单选题】He glanced briefly towards her but there was no sign of _______.
A.
understanding
B.
recognition
C.
consideration
D.
realization
【单选题】She wouldn't be able to speak English so well if she______so hard while studying at college.
A.
hadn't practiced
B.
had practiced
C.
didn't practice
D.
practiced
【简答题】戴维南定理的内容为:任一线性含源单口网络,对外而言,总可以等效为一个实际电压源模型。此电压源的电压等于单口网络端口处的 电压,电压源的内阻等于原单口网络去掉内部 无源网络的等效电阻。
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