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【单选题】
满足Ic=βIb的关系时，三极管工作在( )A.
饱和区
B.
放大区
C.
截止区
D.
击穿区
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What is the correct expression of talking about health?
A.
I've got temperature
B.
I have a fever
C.
I've made a temperature
D.
I'm OK with it
【多选题】When talking about health, you can say: ( )
A.
I feel ill / I don’t feel very well.
B.
I’ve had / got / caught a cold.
C.
I’ve been depressed lately.
D.
I’ve got a bit of temperature.
【多选题】关于细胞膜上的钠钾泵,下列哪些叙述不对
A.
钠钾泵具有 ATP 酶活性
B.
乌本苷可增强钠钾泵的活性
C.
钠钾泵的本质是蛋白质
D.
钠钾泵仅存在于部分动物细胞膜上
【简答题】People have been talking about health for a long time because people know the importance of it. People's understanding of health also becomes deeper with the progress in scientific research. Recently ...
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