when a transistor is in the forward-active mode, the collector current is constant with a constant base current

The<br/>modes of operation of a npn bipolar transistor are ( ). A: forward-active B: cut-off C: reverse-active D: saturation

Although he is in his seventies, he is a young man. A: as active as B: active as C: more active as D: as active

【单选题】期盼 A. look forward to B. forward to C. look forward with D. forward with

We () your early reply. A: look forward to B: look forward in C: look forward on D: look forward off

Which of the following server clusters offers increased availability， performance， and scalability？（） A:  Passive/active B:  Active/passive C:  Passive/passive D:  Active/active

He has been_________ going to England for a long time. A: look forward to B: looking forward to C: look forward D: looking forward

Which of the following is the synonym of “advance” in the phrase “advance the delivery”? A: bring forward B: put forward C: take forward D: lift forward

3.I am ___________________(期待) your reply. A: looked forward to B: looking forward to C: looks forward to

关于操作元素的class属性，正确的是： A: A，element.setAttribute('className', 'active'); B: B，element.class = 'active'; C: C，element.className = 'active'; D: D，element.class-name = 'active';