一个行业的进入壁垒越高,则该行业的自我保护越(),该行业的内部竞争越()。A.强,强 发布时间:2017-05-31 11:26 │ 来源:www.tikuol.com 题型:单项选择题 问题: 一个行业的进入壁垒越高,则该行业的自我保护越(),该行业的内部竞争越()。A.强,强B.强,弱C.弱,强D.弱,弱
题型:单项选择题 Which pregnancy-related physiologic change would place the client with a history of cardiac disease at the greatest risk for developing severe cardiac problemsA. Decreased heart rate.B. Decreased cardiac output.C. Increased plasma volume.D. Increased blood pressur 查看答案