单选题:静脉输液、输血法的原理是( ) 题目分类:专业实践 题目类型:单选题 查看权限:VIP 题目内容: 静脉输液、输血法的原理是( ) A.负压作用 B.正压作用 C.虹吸作用 D.空吸作用 E.液体静压作用 参考答案: 答案解析:
Going Back to Its Birthplace No sporting event takes hold o Going Back to Its Birthplace No sporting event takes hold of the world's atte 分类:专业实践 题型:单选题 查看答案
Many scientists have been probing psychological problems. Many scientists have been probing psychological problems.A.solving B.exploring C 分类:专业实践 题型:单选题 查看答案