Solar Acells, which are often Bcall photovoltaic cells, are Ccomposed of single

游客2024-01-02 18

问题 Solar Acells, which are often Bcall photovoltaic cells, are Ccomposed of single crystals of Dsilicon.

选项 A、
B、
C、
D、

答案 B

解析 Call is incorrect after are often because it is not the passive form. Correction: called.

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SolarAcells,whichareoftenBcallphotovoltaiccells,areCcomposedofsingle