题目内容
（请给出正确答案）
[主观题]
50) They may teach very well and more than earn their salaries, but most of them make litt
le or no independent reflections on human problems which involve moral judgment.
如搜索结果不匹配，请 联系老师 获取答案
国产超薄镜片大都采用()的钡火石光学玻璃材料。
A.折射率1.7035，密度2.028，阿贝数41.6
B.折射率1.7035，密度3.028，阿贝数41.6
C.折射率1.7035，密度7.028，阿贝数41.6
D.折射率1.7035，密度1.028，阿贝数41.6
