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【单选题】
患者男性,30岁,因甲沟炎形成甲下积脓,目前主要的处理方法是A.
两侧甲沟纵行切口
B.
甲根部横切口
C.
拔甲术
D.
一侧纵切口
E.
切除甲根部
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反馈参考答案：
举一反三
【单选题】er: d 5. Mike consumes two commodities, x and y , and his utility function is min{ x + 2 y , y + 2 x }. He chooses to buy 8 units of good x and 16 units of good y . The price of good y is $.50. What i...
A.
$32
B.
$40
C.
$24
D.
$16
【简答题】A.Moveable metal type began to be used in printing. B.Chinese printing technology was first introduced. C.The earliest known book was published. D.Metal type was imported from Korea.
【单选题】造成人类遗传病的原因有多种。在不考虑基因突变的情况下,下列说法正确的是
A.
21三体综合征一般是由于第21号染色体结构异常造成的
B.
猫叫综合征是第5号同源染色体中缺失1条造成的遗传病
C.
冠心病属于多基因遗传病,这类遗传病在群体中发病率较高
D.
若父母表现型均正常,生一个患红绿色盲男孩的概率为1/4
【单选题】Mike consumes two commodities, x and y; and his utility function is min{x +2y,y+2x}. He chooses to buy 8 units of good x and 16 units of good y. The price of good y is 0.50. What is his income?
A.
32
B.
40
C.
24
D.
16
【简答题】造成人类遗传病的原因有多种。在不考虑基因突变的情况下，回答下列问题：原发性高血压属于（）基因遗传病，这类遗传病容易受环境因素影响，在人群中发病率较高。
【简答题】function y=two_min(x) if x<20 y=-exp(-(x/20).^2); else y=-exp(-1)+(x-20)*(x-22); end
【单选题】The young inventor wants to take out a ________ on his new type of printing machine.
A.
privilege
B.
precaution
C.
patent
D.
monopoly
【简答题】What are the advantages of movable type printing?
【单选题】Which type of printing is more convenient based on the passage（）
A.
Movable type.
B.
Baked clay.
C.
Block printing.
D.
Wet ink.
【简答题】invented the art of printing(movable type printing) in the Northern Song Dynasty.
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