分娩后第2日,双乳肿胀有硬结( )
A.会阴切口感染B.乳腺炎C.产后宫缩痛D. * * 壁血肿E.乳汁淤积
参考答案:E
Jack's ______ of black music and performers into a mainstream art form contributed in crucial but not often noted ways to desegregation.
A.transformation
B.assimilation
C.deviation
D.diversion
一个和一个α粒子结合成为一个,并放出5.6 MeV能量。若和α粒子共有130 g,且刚好完全反应,则共放出多少能量?反应中总质量亏损为多少?