题型:填空题 He left his hometown when very young, _____ never to come back.[ ]A. being determined B. to determine C. determined D. having determined 查看答案
题型:填空题 有效循环血容量是指:()。A.从左心室每分钟排出的血量B.从上腔或下腔静脉回到右心房的血量C.单位时间内通过心血管系统循环的血量D.从右心室排到肺功脉进行气体交换的血量E.在大动脉内进行循环的血量 查看答案