题目内容

Which of the following can neutralize HBV particle? ( )

A. HBsAg
B. HBsAb
C. HBeAg
D. HBcAb

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Which tumor marker can be used as a marker for gestational trophoblastic disease?( )

A. HCG
B. CA153
CA125
D. CEA

Which tumor marker in the following is the BEST one for hepatocellular cancer? ( )

A. CEA
B. AFP
Cancer Antigen 125 (CA-125)
D. Carbohydrate Antigen 19-9 (CA19-9)

表单构成中的表单控件、提示信息和表单域是什么？请具体解释。

创建一个用post请求连接到student@itcast.cn的表单，表单名称为itcastmail。