题型:问答题 简答题 已知关于x的方程x2-2(m+1)x+m2-3=0.(1)当m取何值时,方程有两个不相等的实数根?(2)设x1、x2是方程的两根,且(x1+x2)2-(x1+x2)-12=0,求m的值. 查看答案
题型:问答题 简答题 There was a half smile on his face which suggested that he____happy to have given his life for his country. A.wasB.should beC.would beD.were 查看答案
题型:问答题 简答题 某孕妇,25岁,妊娠38周,血压150/100 mmHg,收入院。检查:一般情况好,下肢水肿(+),宫底高 31 cm。估计胎儿体重2 600g,胎心率136次/min,尿蛋白(+)。该孕妇的初步诊断为A.先兆子痫B.轻度妊高征C.中度妊高征D.妊娠合并慢性高血压E.妊娠合并泌尿系感染 查看答案