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

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

For basic operation of a transistor the base-emitter junction is （    ） biased.

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

If a BJT is applied in the cutoff region, the base-emitter junction must be ( ) biased and the base-collector junction must be ( ) biased

For basic operation of a transistor the base-emitter junction is ____ biased. A: forward- B: reverse- C: not D: semi-

“粒子”特效的属性Emitter能设置粒子的形状

When a BJT has its base-emitter junction reverse biased and its collector-base junction reverse biased, it is in the （    ）.

标准以太网指的是 ( ) A: 10 BASE 5 B: 10 BASE 2 C: 10 BASE T D: 100 BASE T

（6-2）定义如下Base类，能在(1)处正确调用Base的构造方法。 class Base{ int x,y; Base(int x){} Base(int x,int y){ //(1)调用Base的构造方法 } }