选择题:直拉硅中的金属杂质必须避免,它们扩散很快,可以形成复合体或者沉淀,对于硅晶体的电学性质有严重的危害。

题目内容:

直拉硅中的金属杂质必须避免,它们扩散很快,可以形成复合体或者沉淀,对于硅晶体的电学性质有严重的危害。

A.正确

B.错误

参考答案:

Mechanical stress plays an important role in the cell prolif

Mechanical stress plays an important role in the cell proliferation, differentiation, apoptosis, gene expression and tis

查看答案

If the research was to find out whether the drug sunitinib m

If the research was to find out whether the drug sunitinib malate can treat pancreatic neuroendocrine tumors, the best t

查看答案

GD patients were diagnosed according to their clinical manif

GD patients were diagnosed according to their clinical manifestations supplemented with the biochemical tests of thyroid

查看答案

PaaS主要面向的用户是()?

PaaS主要面向的用户是()?这是一个关于用户 开发者 数字新技术的相关问题,下面我们来看

查看答案

被誉为计算机科学与人工智能之父的是()

被誉为计算机科学与人工智能之父的是()这是一个关于人工智能 西蒙 数字新技术的相关问题,下面我们来看

查看答案