皮皮学，免费搜题
登录
搜题
【单选题】
已知某系统的如下所示,则下列说法错误的是。( )A.
a,b均大于零系统是稳定的。
B.
a,b均小于零系统是不稳定的
C.
a大于零,b小于零系统有一个正实部根
D.
a大于零,b小于零系统有两个正实部根
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
【简答题】Why did they offer the silver medal instead of the gold medal for the winner for the first couples of s? Tell me about your opinions. 为什么在最初的奥运会中,获得冠军颁发银质奖牌而不是黄金奖牌呢?
【多选题】Why did Gail's father disapprove of their marriage?
A.
He suspected that Mark was marrying Gail in order to remain in the US.
B.
He thought mixed couples had higher divorce rates than couples of the same race.
C.
He thought people could be very cruel toward children from mixed marriages.
D.
He was a racist.
【多选题】Why did Gail and Mark believe that they were prepared for getting married?
A.
They were sure of their love for each other.
B.
They believe that their racial and cultural differences enhanced their relationship.
C.
They were realistic and prepared for the difficulties as a mixed couple in America.
D.
They were sure to avoid the mistake made by many couples of marrying for the wrong reasons .
【单选题】Why did Murray and Gottman do a follow-up 4 years after the research?
A.
To see how signifi cant the solution they found is.
B.
To see how math and romance are related to each other.
C.
To see whether the equation had made the right decision.
D.
To see whether the couples in the research are still married.
【多选题】Why did Gail and Mark believe that they were prepared for getting married?
A.
They were sure of their love for each other.
B.
They believe that the racial and cultrural differences enhanced their relationship.
C.
They are realistic and prepared for the difficulties as a mixed couple in America.
D.
They are sure to avoid the mistake made by many couples of marrying for the wrong reasons.
【简答题】Why did Gail and Mark believe that they were parepared for getting married? The fourth reason : they were sure to ________ the _________ made by many couples of marrying for wrong reason.
相关题目：