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【多选题】
下列说法哪种是正确的？A.
根轨迹 与虚轴的交点坐标以及对应的根轨迹增益值可以通过劳斯判据来求取
B.
根轨迹 与虚轴的交点坐标以及对应的根轨迹增益值可以通过令闭环特征方程中的 s=j 后解方程求取
C.
根轨迹与虚轴交点处的根轨迹增益值一定是系统临界稳定时的根轨迹增益值
D.
根轨迹与虚轴交点处的根轨迹增益值不一定是系统临界稳定时的根轨迹增益值，具体还要看其他的闭环极点是否均在左半平面
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【单选题】Which of the following is considered to be the most enduring heritage of the Romans?
A.
Art.
B.
Science.
C.
Law.
D.
Architecture.
【单选题】_____is considered to be the summit of Shakespeare’s art.
A.
Romeo and Juliet
B.
The Comedy of Errors
C.
Hamlet
D.
The Tempest
【单选题】散粮船的特点是:I、船型肥大;II、货舱为棱形结构;III、舱口较宽大,舱口围板也较高(203192:第01章 船舶常识) (A-0,B-0,C-0,D-0,错误-0)
A.
I、II
B.
II、III
C.
I、III
D.
I、II、III
【单选题】____ is considered to be the summit of Shakespeare’s art.
A.
The Tragedy of Hamlet, Prince of Denmark
B.
King Lear
C.
The Tragedy of Coriolanus
D.
The Tempest
【简答题】根据例子造句 garçon (petit) yeux(immense) Un petit garçon avec des yeux immenses fille (beau) livres (nouveau)
【简答题】Welfare change has worried parents a lot recently. Some parents are on welfare so they can care their 1 children. They say their caseworkers are telling them they 2 go to work. If they don ’ t, they w...
【单选题】Buildings and art are considered to be the _____ of a culture.
A.
Explicit artifacts and product
B.
Norms and values
C.
Formal values
D.
Basic assumptions that govern behavior
【单选题】听力原文： Like most other folk art, the calendar pictures were not considered to be art in their own day. People just thought of them as a way of decorating a practical object. In fact, the calendar pictu...
A.
Very few were produced.
B.
Most were kept only a short time.
C.
Most were pointed on delicate paper.
D.
Many have been acquired by collectors.
【单选题】清洗奶桶时,洗涤剂采用添加少量亚硫酸钠于碳酸钠或苛性钠的溶液,以保护锡层不受腐蚀,其中亚硫酸钠与碳酸钠溶液配比一般为( )。
A.
1:5
B.
1:10
C.
1:4
D.
1:8
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