【单选题】测量为8mA的电流时,若希望误差不超过0.4mA,则最好选用下列哪项方案?()
【单选题】My brother said, “I’m watching TV now.” My brother said watching TV .
【简答题】阅读理解 My name is Peter. I am 12. I have one brother and one sister. My brother is 15 and my sister is 9. I have a friend. He is an English boy. His name is Tanaka. He is in my class. I have a dog, too....
【简答题】完形填空。 1 , I'm Meg. I'm twelve years 2 . I have a brother 3 a sister. My brother is nine and my sister is 4 four. I like hamburgers and salad. My brother likes 5 and my sister likes ice cream. We 6 a s...
【单选题】实验板上LED1和LED2与CC2530的连接如下图所示,LED1和LED2的负极端分别通过一个限流电阻连接到地(低电平),它们的正极端分别连接到CC2530的( )端口。
【简答题】Hello. I’m Meg. I’m 12 years old. I have a brother and a sister. My brother is 9 and my sister is only 4 years old. I like vegetables and salad. My brother likes tomatoes and my sister likes ice- crea...
【单选题】实验板上LED1和LED2与CC2530的连接如下图所示,LED1和LED2的负极端分别通过一个限流电阻连接到地(低电平),它们的正极端分别连接到CC2530 的( )端口
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【单选题】测量为8mA的电流时,若希望误差不超过0.2mA,则最好选用下列哪项方案()