题目内容：
现用乙肝疫苗含有的成分是
A．HBcAg B．HBsAg
C．HBeAg
D．抗HBe
E．抗HBs
参考答案：
答案解析：
单选题：现用乙肝疫苗含有的成分是
- 题目分类：临床执业医师
- 题目类型：单选题
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B．HBsAg
C．HBeAg
D．抗HBe
E．抗HBs
B．HBsAg
C．HBeAg
D．抗HBe
E．抗HBs
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强心苷治疗心房颤动的主要机制是A．缩短心房有效不应期 B．延长心房有效不应期 C．降低窦房结自律性 D．降低心房异位节律点自律性 E．减慢房室传导
急性炎症过程中，下列最先发生的变化是
急性炎症过程中，下列最先发生的变化是A．静脉性充血 B．动脉性充血 C．细动脉痉挛 D．白细胞附壁 E．液体渗出
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What is the author's tone toward the Northern Lights?A．Indifferent. B．Sarcastic.
When a large star explodes, the gravity compacts ever piece
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The team was funded by several research institutes.
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