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【单选题】
血管性血友病最主要的临床表现是什么?
A.
皮肤紫癜
B.
不同程度出血
C.
内脏出血
D.
关节出血
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【多选题】下列有关深Ⅱ°的临床表现，正确的是（）
A.
常形成较大的水疱
B.
水疱基底常呈现红白相间
C.
感觉较为迟钝
D.
拔毛试验阳性
E.
正常愈合后不留瘢痕，可有程度不等的色素沉着
【单选题】关于血友病儿童的口腔治疗原则，叙述错误的是（）
A.
行下颌阻滞或上牙槽阻滞，凝血因子浓度应达到50％水平
B.
可以在局部麻醉下行活髓切断术或牙髓摘除术
C.
乳牙正常脱落通常不会导致出血
D.
可行洁治术
E.
可行正畸治疗
【单选题】Defective Genes and Human Health Each of us carries about half a dozen defective(有缺点的) genes. We remain blissfully(快乐地) unaware of this fact unless we, or one of our close relatives, are amongst the m...
A.
Genetically engineered proteins are better than blood products in treating hemophilia.
B.
Only those who suffer from a genetic disease carry about half a dozen defective genes.
C.
The Y chromosome males have are from their fathers.
D.
Whether a defensive gene produces ill effects has something to do with the environment in which the gene operates.
相关题目：
【多选题】下列有关深Ⅱ°的临床表现，正确的是（）
A.
常形成较大的水疱
B.
水疱基底常呈现红白相间
C.
感觉较为迟钝
D.
拔毛试验阳性
E.
正常愈合后不留瘢痕，可有程度不等的色素沉着
【单选题】关于血友病儿童的口腔治疗原则，叙述错误的是（）
A.
行下颌阻滞或上牙槽阻滞，凝血因子浓度应达到50％水平
B.
可以在局部麻醉下行活髓切断术或牙髓摘除术
C.
乳牙正常脱落通常不会导致出血
D.
可行洁治术
E.
可行正畸治疗
【单选题】Defective Genes and Human Health Each of us carries about half a dozen defective(有缺点的) genes. We remain blissfully(快乐地) unaware of this fact unless we, or one of our close relatives, are amongst the m...
A.
Genetically engineered proteins are better than blood products in treating hemophilia.
B.
Only those who suffer from a genetic disease carry about half a dozen defective genes.
C.
The Y chromosome males have are from their fathers.
D.
Whether a defensive gene produces ill effects has something to do with the environment in which the gene operates.
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