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【单选题】
半导体导电的载流子是( )A.
电子
B.
电子和空穴
C.
空穴
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反馈参考答案：
举一反三
【单选题】新时期爱国统一战线包括两个范围的联盟，其中作为主体的是( )。
A.
大陆范围内的联盟
B.
大陆范围外的联盟
C.
大陆范围内的联盟与大陆范围外的联盟的结合
D.
工农联盟
【简答题】After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had news to report: The damage and death toll could have been much worse. More than 60 people died in this earthquake...
【单选题】关于胶体金结构和特性描述错误的是:
A.
包括一个基础金核；
B.
颗粒大小约为1-100nm；
C.
具有内正外负的双离子层；
D.
对电解质敏感；
E.
吸收峰波长随颗粒大小而改变。
【简答题】After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: The damage and death toll(死亡人数) could have been much worse. More than 60 people died in this...
【简答题】希望小学有图书57686本，这是一个精确数．______．
【简答题】After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: The damage and death toll (死亡人数) could have been much worse. More than 60 people died in thi...
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