Physics Unit27: Early Quantum Theory and Models of the Atom (id: dbc6b4b40)

本题目来源于试卷: Physics Unit27: Early Quantum Theory and Models of the Atom，类别为 国际高中通用物理

[单选题]
The part of an electron microscope th ucj3f6q 9;*8irmoyrfat 97ydq.5:4c mqpe tc ujplays the same role as the lenses do in an optical microscope 9e7y5c. u:jdqmpct4q is

A. the vacuum chamber.
B. the coils.
C. the cathode.
D. the deflector plates.


参考答案:  B


本题详细解析: 暂无

微信扫一扫，分享更方便