(1)化简:(-2ab+3a)-2(2a-b)+2ab;(2)化简后求值:(xy 发布时间:2017-05-20 12:07 │ 来源:www.tikuol.com 题型:解答题 问题: (1)化简:(-2ab+3a)-2(2a-b)+2ab;(2)化简后求值:(xy-23y-23)-(12x-12xy+1),其中x=23,y=34.
题型:解答题 _____ is often the Case with the old, my grandmother is into talking about good old days. [ ]A. WhenB. As C. That D. Which 查看答案
题型:解答题 患者女性,65岁,气急,乏力,心绞痛,持续时间长,休息和含服硝酸甘油不能缓解。心电图示前间壁心肌梗死,临床诊断为冠心病,心肌梗死。冠心病超声心动图上可见并发症有()。A.真性室壁瘤形成B.左室心尖部血栓C.心脏破裂D.假性室壁瘤E. * * 肌功能不全F.梗死区伸展和扩张G.二尖瓣腱索断裂 查看答案