Which one is semiconductor in the following materials?
A. silicon
B. quartz
C. glass
D. copper
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The basic quality of color was revealed by ________.
A. Isaac Newton
B. Olaf Römer
Christian Huygens
D. Planck
Forward bias is the condition that prevents current across the pn junction. ()
A. T
B. F
The periodic arrangement of atoms in a crystal is called a lattice.()
A. T
B. F
下列关于冲积扇的结构划分中,哪个更适合于作为油气储层?( )
A. 扇根
B. 扇中
C. 扇端
D. 扇中和扇端