Which element is suitable for making p-type Si semiconductor by doping? A: As B: P C: Sb D: B

小分子物质跨膜主动运输中，下列属于P型驱动泵（P-type pump）的有（ ）

To any P-type semiconductor, the number of holes ( ) the number of free electrons

中国大学MOOC: A contact is formed between a metal and a p-type semiconductor. This contact is ( )if Φm>Φs.

The interface between P-type region and N-type region is called（ ）. A: the metallurgical junction B: the surface C: the junction D: the plane of port

A contact is formed between a metal and a p-type semiconductor. This contact is ( )if Φm>Φs. A: homojunction B: heterojunction C: ohmic contact D: rectifying contact

<p>[img=186x28]17ca165eab67728.png[/img]</p><p>[img=570x79]17ca165eb891383.png[/img]</p> 未知类型：{'options': ['', '', '', ''], 'type': 102}

There is a certain type of band called a boy band. What is a boy band? </p></p>

设A,B是两个随机事件,则P(A-B)= 未知类型：{'options': ['P(A)-P(B)', 'P(A)-P(B)+P(AB)', 'P(A)-P(AB)', ''], 'type': 102}

已知P(A)=0.5,若P(AB)=0.125,则P(A-B)=( ) 未知类型：{'options': ['', '', '', ''], 'type': 102}