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问题 多项选择题 X型题

下列关于新生儿溶血病的叙述，正确的有（）

A.新生儿溶血病是指母婴血型不合而引起的同族免疫性溶血

B.新生儿溶血病仅发生在胎儿和新生儿

C.ABO溶血病主要发生于母亲为O型而胎儿为A型或B型

D.当母亲为AB型或胎儿为O型则不会发生新生儿溶血病

E.以上均正确

答案

参考答案：A, B, C, D, E

单项选择题

The "Karat" marking on jewelry tells you what proportion of gold is mixed with other metals. If 14 parts of gold are mixed with 10 parts of base metal, the combination is called 14-Karat (14K) gold. The higher the Karat rating, the higher the proportion of gold in the object. The lowest Karat gold that can be marketed in the United States is 10-Karat gold. Jewelry does not have to be marked with its Karat quality, but most of it is. If there is a Karat quality mark, next to it must be the U.S. registered trademark of the person or company that will stand behind the mark, as required by the National Gold and Silver Stamping Act.

Gold which is 10 Karats in proportion ________in the U.S.

A．represents the highest grade of gold

B．cannot be sold

C．never carries a Karat quality mark

D．represents the lowest-grade gold marketable
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单项选择题

女孩，3岁9个月，体检是发现左侧心前区有Ⅳ级收缩期杂音，初步诊断为室间隔缺损。如要进一步明确诊断，应选择下列哪项最为重要而又无创的诊断方法（）

A.X线心脏摄片

B.心电图

C.多普勒彩色超声心动图

D.心导管检查

E.心血管造影
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