挑战习题
1/5单选题
难度:

1.下列微粒结构示意图中属于原子的是
A
B
C
D
提示1:
5ZyG5ZyI5YaF55qE5pWw5a2X6KGo56S65qC455S16I235pWw77yM5aSW6Z2i55qE5Y2K5byn5Lit6KGo56S655qE5pWw5a2X5Li65qC45aSW55S15a2Q5pWw44CC
提示2:
5aaC5p6c5b6u57KS5Li65Y6f5a2Q77yM6YKj5LmI5qC455S16I235pWw562J5LqO5qC45aSW55S15a2Q5pWw44CC
正确答案:RA==
5Y+q5pyJ5b2T57uT5p6E56S65oSP5Zu+5Lit55qE5qC455S16I235pWw562J5LqO5qC45aSW55S15a2Q5pWw5pe277yM57uT5p6E56S65oSP5Zu+5omN6IO96KGo56S65Y6f5a2Q44CC5ZCm5YiZ5piv56a75a2Q44CC5pys6aKY5Lit77yM5Y+q5pyJROmhueWPr+S7peihqOekuuWOn+WtkOOAgg==