左心室双出口中室间隔缺损(VSD)的类型有() A.主动脉下 B.双动脉下 C.肺动 发布时间:2017-08-31 20:16 │ 来源:www.tikuol.com 题型:多项选择题 问题: 左心室双出口中室间隔缺损(VSD)的类型有()A.主动脉下B.双动脉下C.肺动脉下D.远离大动脉E.对位不良型
题型:多项选择题 Great efforts to increase grain production _____ if food shortages are to be avoided. [ ]A. could be made B. must be made C. might be made D. would be made 查看答案