A typical photovoltaic cell consists of semiconductor material (usually iron oxide) having a PN junction.
错误
举一反三
- After the formation of the pn junction, there is a built-in voltage across the junction.
- After the formation of the pn junction, there is a built-in voltage across the junction. A: 正确 B: 错误
- _________ is a typical substructure. It consists of column, iron plate, steel beams and concrete pad.( ) A: Pile B: Aerodynamic resistance C: Spread Footing D: Narrowed foundation
- The White Cliffs of Dover are composed mainly of: A: Calcium Carbonate B: Silicon Dioxide C: Mangan Oxide D: Iron Oxide
- Civilization______ having a constructive attitude. A: consists of B: consists on C: consists about D: consists in
内容
- 0
Cell实现其社会性联系的方式包括 A: cell communication B: cell junction C: 与胞外基质间相互作用 D: 以上都对
- 1
Fill in the blank to make the following statement true: "In a semiconductor material, account(s) for mostly of the current
- 2
【多选题】An essay usually consists of ________.
- 3
One paragraph usually consists of ___.
- 4
The atmosphere of Mars consists mostly of ______. A: oxygen B: carbon dioxde C: helium D: nitrous oxide