集成运放CF741内部结构采用晶体管的作用就是为了放大。
A. 对
B. 错
集成电路工艺还不能制作大电容和电感。因此,集成电路中各级间的耦合只能选择直接耦合方式。
A. 对
B. 错
在单缝夫琅禾费衍射实验中,已知光波长为0.63mm,缝宽为0.1mm,缝后透镜焦距为0.55m,求透镜焦平面上中央亮纹的宽度。
It is our general/usual practice that business is subject to shipped quality.正确的翻译是()
A. It is our general/usual practice to pay by L/C.
B. It is our general/usual practice that not paying any commission.
C. It is our general/usual practice to sale by samples.