【单选题】The word "prudent" in paragraph I is closest in meaning to
【单选题】The chief purpose of this passage is______.
A.
to prove that Madonna is a prudent and shrewd woman
B.
to show she is one of the richest women on the planet
C.
to reveal Madonna's most assiduously disguised talent of business
D.
to give us a true picture of Madonna
【简答题】Try to impress your boss with your thoroughness.
【简答题】把 电变成 的电路叫整流电路,采用二极管做整流元件是因为二极管具有 特性。
【判断题】二极管、三极管、IC都是有极性的元件,在贴装时一定要分清楚它们的极性。
【简答题】如下图所示的半导体二极管,阳极是 管脚,阴极是 管脚。该元器件具有 特性。用数字万用表检测该器件时,显示的数值是小值,因此,红表笔所接的极是二极管的 极。