A.Colleagues.B.Classmates.C.Teacher and student.D.Employer and
A. Colleagues.
B. Classmates.
C. Teacher and student.
D. Employer and employee.
患者,男性,22岁。左腰部外伤,有少量血尿及腰痛,血压80/50 mmHg,脉搏:110次分,查体腰部可触及一压痛性肿块,可能为何种损伤
A. 肾挫伤
B. 损伤性动脉阻塞
C. 重度肾损伤
D. 肾蒂断裂
E. 输尿管损伤
植物界系统发育中物种的灭绝有什么意义?物种的进化与灭绝有何关系?