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【多选题】
对HBeAg叙述正确的是
A.
HBeAg是HBV病毒复制的指标之一,位于HBV病毒颗粒的核心部位
B.
HBeAg检测阳性可提示乙型肝炎患者的病情为活动性
C.
乙型肝炎患者的血清中HBeAg持续阳性,则提示乙型肝炎转为慢性,表明患者预后不良
D.
HBeAg检测有助于预测肝炎病情
E.
HBeAg和HBsAg均为阳性的妊娠妇女,可将乙型肝炎病毒传播给新生儿
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【判断题】方差和标准差都是以均值为中心的、反映部分数据的离散程度的特征值,在多方面都优于极差。
A.
正确
B.
错误
【单选题】加工中心与普通数控机床的区别在于()
A.
有刀库和自动换刀装置
B.
转速
C.
机床的刚性好
D.
进给速度高
【单选题】听力原文:W:I have been looking through your application.You seem to have many of the qualifications needed for this position.Do you have any work experience? M:Actually,I am scheduled to finish school in ...
A.
He has just quitted his former job.
B.
He is still a school student.
C.
He is applying for a job.
D.
He is having an interview now.
【单选题】听力原文:W: I have been looking through your application. You seem to have many of the qualifications needed for this position, especially experience. M: I have been working in hotels for eight years. W: ...
A.
He is satisfied with it.
B.
Not totally pleased.
C.
It's not hard.
D.
He doesn't like it.
【单选题】563. ( )是硬件抗干扰措施。
A.
屏蔽技术
B.
接地措施
C.
滤波技术
D.
 以上都是
【单选题】听力原文:W: Edward Allsop, you seem to have had two consuming passions in your life, music and politics. Am I right? M: Yes. I think it's very important that leaders should have a wide variety of interest...
A.
A violinist.
B.
A pianist.
C.
a musician.
D.
a politician.
【单选题】听力原文:W:You seem to have a lot of work at your office.You're, always staying late and working overtime. M:That's true,but it's no matter to me.The work is interesting and fun.I don't mind the extra hou...
A.
He hates his job.
B.
He enjoys his job.
C.
He wants to find another job.
D.
He is indifferent to his job.
【单选题】( )是硬件抗干扰措施
A.
屏蔽技术
B.
接地技术
C.
滤波技术
D.
以上都是
【单选题】You seem to have a ready—made answer _______ I ask you a question.
A.
however
B.
whatever
C.
whichever
D.
whenever
【单选题】向土壤加入一定浓度的钠盐,土壤颗粒会()
A.
更加分散
B.
团聚在一起
C.
没有任何变化
D.
带有更多的电荷
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