The energy level structure of semiconductor materials is not a discrete single-valued energy level, but a band structure with a certain width, called . A: Energy band B: Valence band C: Conduction band D: Forbidden band

(4) A. bank B. band A: bank B: band

On May.25, 1992 the British music newspaper Melody Maker featured a band on the cover with the headline "The Best New Band in Britain" before the band released their first single. The band is _________. A: . U2 B: . Coldplay C: . Suede D: . The Cranberries

On May.25, 1992 the British music newspaper Melody Maker featured a band on the cover with the headline "The Best New Band in Britain" before the band released their first single. The band is _________.

‍The scale band is:​ A: Linear horn belt B: Index band C: Exponential horn belt D: None of the above

以下哪一项不属于NB-IoT部署方式?() A: EC-GSM B: Guard Band C: In Band D: Standalone

Which spectrum band of follows does NOT belong to optical spectrum band? A: O-band B: C-band C: L-band D: X-band

（)作为5G新增频段，频段资源丰富，缺点是上行覆盖受限。 A: A.Sub6G B: B.C-Band C: C.毫米波 D: D.Sub 3G

band / bænd/

band