当脑脊液中蛋白质的含量超过多少时,脑脊液可见混浊()。
A.5g/L
B.10g/L
C.15g/L
D.20g/L
E.25g/L
参考答案:B
_________ first time I met him in his office, he shook me by _________ hand warmly and then introduce himself to me.
A.The; 不填
B.The; the
C.The; a
D.A; 不填
消像散器的作用和原理是什么?