题目内容

打印机的分类方法很多,从打字原理来区分,可分为( )。

A. 击打式和非击打式
B. 串行式和并行式
C. 点阵式和活字式

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一个完整的磁盘存储器由三部分组成,其中是磁盘机与主机的接口部件;是独立于主机的一个完整的设备;用于保存信息。

Which of the following markers is usually the first viral marker detected after hepatitis B infection?

A. HBeAg
B. HBsAg
C. HBcAg
D. Anti-HBc
E. HBeAb

Which one of the following markers is closely associated with HBV infectivity and DNA polymerase activity?

A. HBeAg
B. HBsAg
C. HBcAg
D. Anti-HBc
E. HBeAb

Which of the following is found within the nuclei of infected hepatocytes and not usually in the peripheral circulation?

A. HBeAg
B. HBsAg
C. HBcAg
D. Anti-HBc
E. HBeAb