β is the ratio of _____. A: collector current to emitter current B: base current to collector current C: collector current to base current D: emitter current to collector current

The United States is the world’s No.1 emitter of greenhouse gases.

“粒子”特效的属性Emitter能设置粒子的形状

When a BJT is operating in the active region, the voltage drop from the base to the emitter VBE is approximately equal to the____ A: base bias voltage B: base current times the base resistor C: diode drop (about 0.7 V) D: emitter voltage

黑体能够在所有方向上均匀发射热辐射，黑体属于漫射表面(Diffuse emitter)。

黑体能够在所有方向上均匀发射热辐射，黑体属于漫射表面(Diffuse emitter)。 A: 正确 B: 错误

在电路设计里，若将两个或更多个发射极开路输出引脚(Open Emitter Pin)连接输出，则会怎样？_

When a BJT is in cutoff, the collector-to-emitter voltage is typically equal to _____ A: collector supply voltage B: collector current times collector resistor C: 0.3 Volts D: emitter voltage

When a BJT is biased in the cutoff region the collector-to-emitter voltage is typically equal to （ ）. A: the emitter voltage B: the collector supply voltage C: 0.03 V D: the collector current times the collector resistor

下列哪种引脚称为三态引脚?: 发射极开路输出引脚(Open Emitter Pin).|被动式引脚(Passive Pin)。|集电极开路输出引脚(Open Collector Pin)。|高阻抗引脚(HiZ Pin)。