皮皮学,免费搜题
登录
搜题
【简答题】
已知x为实数,且满足(2x 2 +3x) 2 +2(2x 2 +3x)-15=0,则2x 2 +3x的值为______.
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【单选题】I was writing my thesis when a phone call came in.That was the first time I ______.
A.
am interrupted
B.
have interrupted
C.
have been interrupted
D.
had been interrupted
【单选题】作业成本按作业动因分配到( )。
A.
产品
B.
作业
C.
作业池
D.
成本项目
【简答题】My topic today is the Internet. It was prompted(引出)by the first letter, which I am unable to answer fully for the reasons given! Dear David, I’m a middle school student. Now I am preparing for a writi...
【单选题】---- -I was the first in the girl s’ 1500 meters. ---- -
A.
I am sorry
B.
Bad luck
C.
Congratulations
【单选题】患者,女性,43岁。患胆总管结石合并胆管炎,非手术治疗期间出现下列哪项临床表现应立即做好急诊手术前准备( )
A.
黄疸进行性加深
B.
低血压,意识不清
C.
胆囊肿大,有压痛
D.
体温升高,脉速
E.
白细胞计数增高
【单选题】作业4-9.docx
A.
4
B.
3
C.
2
D.
1
【简答题】Nancy had just got a job as a secretary in a company. Monday was the first day she went to work, so she was very 36 and arrived early. She 37 the door open and found nobody there. “I am the 38 to arri...
【单选题】烹制菜肴的最佳用具是
A.
铁锅
B.
铜锅
C.
铝锅
D.
瓷锅
【简答题】患者女 , 43 岁。胆囊结石病史 3 年。主诉晩餐后突然出现右上腹阵发性剧烈疼痛 , 向右肩、背部放射 , 伴有腹胀、恶心呕吐等症状。查体 : 体温 38.9 °C , 脉搏 112 次 / 分 , 血压 106/85mmHg ;右上腹部有压痛、反跳痛、肌紧张。实验室检查 :WBC10.5X10 9 /L, 中性粒细胞 0.79 。
【多选题】为了实现座椅位置的调节,普通电动座椅包括( )。
A.
若干个单向电动机
B.
若干个双向电动机
C.
传动装置
D.
控制电路
相关题目: