绞窄性疝和嵌顿性疝的区别最主要是在于
A.腹部突起包快的形状B.疝内容物能否回纳C.疝囊有无压痛D.是否有机械性肠梗阻E.疝内容物有无血液循环障碍
参考答案:E
----What will you buy for your husband’s birthday?
---- I want to buy a ________ wallet for him.
A.small black leather
B.black leather small
C.small leather black
D.black small leather
大闸各凸轮均匀磨耗量小于()。