血管壁玻璃样变多见于
A．大静脉B．中型动脉C．细动脉D．大动脉E．小静脉
参考答案：C
怎样判别三极管是PNP型还是NPN型？
What is said about the research paper
A．The paper came out as short as I expected.
B．Actually the paper was long enough to cover it.
C．The paper was short enough to present.
D．The paper turned out better than I had expected.
