腹部闭合性损伤造成腹腔内出血的主要原因是
A．胰腺破裂
B．肝、脾破裂
C．肠系膜血管破裂
D．胆囊破裂
E．肠管破裂
参考答案：B
She believes that she is not a good mother because she does not fit the stereotype of a woman who spends all her time with her children.
A．popular image
B．common standard
C．fixed conception
D．pleasant notion
门机的起升机构是由（）组成。
