下列哪项不是腮腺混合瘤的超声表现特点()
A.腮腺呈弥漫性肿大
B.腮腺内见边界清楚的病灶
C.病灶多为实性均质回声
D.病灶囊性变时可见大小不等的无回声区
参考答案:A
下列反应的离子方程式正确的有
A.NH4HCO3溶于过量的NaOH溶液中:HCO3-+OH-=CO32-+H2O
B.电解饱和食盐水:2Cl-+2H2OH2↑+Cl2↑+2OH-
C.氯气通入冷水中 Cl2 +H2O = Cl-+ClO-+2H+
D.FeBr2溶液中通入足量的Cl2:2Fe2++Cl2=2Fe3++2Cl-
The nurse is caring for a neonate 12 hours after birth. Which clinical manifestation would be the earliest indication that the neonate may have cystic fibrosis()
A. Steatorrhea.
B. Meconium ileus.
C. Decreased sodium levels.
D. Rhinorrhea.