The author of this passage suggests that people may prefer to buy a palm computer for__________.
A. $199
B. $229
C. $299
D. $399
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By establishing a high reference price, the company wants to __________.
A. cut down its fat margins
B. launch more affordable products
C. attract people’s attention to its products
D. make the product prices look lower and affordable
对于结型场效应管，当︱uGS︱>︱UGS(off)︱时，管子一定工作在 。
A. 恒流区
B. 可变电阻区
C. 截止区
D. 击穿区
某场效应管的开启电压UGS(th)=2V，则该管是 。
A. N沟道增强型MOS管
B. P沟道增强型MOS管
C. N沟道耗尽型MOS管
D. P沟道耗尽型MOS管
场效应管是通过改变 来改变漏极电流的。所以是 控制型器件。
A. 栅源电压
B. 漏源电压
C. 栅极电流
D. 电压
E. 电流
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