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【单选题】
某功率放大电路的工作状态如下图所示,静态工作点Q大致在交流负载线的中点,这种情况称为A.
甲类工作状态
B.
乙类工作状态
C.
甲乙类工作状态
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举一反三
【简答题】DHCP的主配置文件是()
【判断题】Utterance meaning includes not only the relevant sentential meaning(s) but also various meanings determined by the contexts where the utterance takes place.()
A.
正确
B.
错误
【单选题】补体三条激活途径的共同点是
A.
所需离子相同
B.
参与的激活的补体成分相同
C.
C3转化酶的组成相同
D.
具有共同的末端通路即MAC的形成及其溶解细胞效应相同
E.
激活物质相同
【简答题】The table below gives information about the percentage of land covered by forest in various countries in 1990 and 2005, with estimated figures for 2015. Summaries the information by selecting and repo...
【单选题】Instead of being situated at a fixed campus,the City University conducts classes at various sites deemed convenient to students.
A.
considered
B.
located
C.
advised
D.
modified
【单选题】The flower shop became prosperous with its __________of roses with high quality and various colors.
A.
procession
B.
array
C.
succession
D.
string
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