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【单选题】
For the standard linear programming problem, the following statement is wrong ( )
A.
In the sensitivity ysis of new variables, if the new variables can enter the basic variables, the objective value will be further improved
B.
In sensitivity ysis with new constraints, the value of the new optimal objective value cannot be increased
C.
When a constraint constant bk increases, the value of objective value will increase
D.
When the objective coefficient of a basic variable increases, the objective value will be improved
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举一反三
【单选题】In 1991, international mountaineers lost their lives in Meili Snow Mountain due to ______.
A.
a storm
B.
an avalanche
C.
an eathquake
D.
a tornado
【单选题】If the objective coefficient of a non-basic variable in the optimal basis of linear programming problem changes, then ( )
A.
The test number of this basic variable changes
B.
The test number of other basic variables changes
C.
The test numbers of all non-basic variables change
D.
The test numbers of all variables change
【判断题】In Beat 2 of the Horse Stance Side-step Movement, both hands end up in the ready stance.
A.
正确
B.
错误
【单选题】When measuring the short-circuit characteristics of synchronous generators, if the speed decreases by , the measured short-circuit characteristics ( ).
A.
Be unchanged
B.
Increase by 0.8 times
C.
Reduce by 0.8 times.
【单选题】The reason why the stable short-circuit current of the synchronous generator is not very large ( ).
A.
Large leakage impedance
B.
Short-circuit current produces strong demagnetization;
C.
The armature reaction produces magnetization
D.
The synchronous reactance is relatively large.
【多选题】which ones are the special cloud views of Mount Cangshan in Dali？
A.
Husband-Expecting Clouds
B.
Jade Belt Clouds
C.
summer clouds
D.
winter clouds
【单选题】These natural veins of marbles are spoken of as “______”.
A.
Natural weavings
B.
Natural Chinese Paintings
C.
Natural Oil Paintings
D.
Natural landscapes
【单选题】Hand motions in Beat 5 of the Waist-twining Silk-flinging: Raise both arms forward to （ ） degrees in the upper left and fling the silk, make two arms form a （ ）-degree angle.
A.
45、45
B.
45、60
C.
60、60
D.
60、45
【单选题】InTibetan culture, what does the term “Shangrila” mean？
A.
a dreamlike paradise
B.
the sun and the moon in the heart
C.
a peaceful lake
D.
a holy place
相关题目：
【单选题】In 1991, international mountaineers lost their lives in Meili Snow Mountain due to ______.
A.
a storm
B.
an avalanche
C.
an eathquake
D.
a tornado
【单选题】If the objective coefficient of a non-basic variable in the optimal basis of linear programming problem changes, then ( )
A.
The test number of this basic variable changes
B.
The test number of other basic variables changes
C.
The test numbers of all non-basic variables change
D.
The test numbers of all variables change
【判断题】In Beat 2 of the Horse Stance Side-step Movement, both hands end up in the ready stance.
A.
正确
B.
错误
【单选题】When measuring the short-circuit characteristics of synchronous generators, if the speed decreases by , the measured short-circuit characteristics ( ).
A.
Be unchanged
B.
Increase by 0.8 times
C.
Reduce by 0.8 times.
【单选题】The reason why the stable short-circuit current of the synchronous generator is not very large ( ).
A.
Large leakage impedance
B.
Short-circuit current produces strong demagnetization;
C.
The armature reaction produces magnetization
D.
The synchronous reactance is relatively large.
【多选题】which ones are the special cloud views of Mount Cangshan in Dali？
A.
Husband-Expecting Clouds
B.
Jade Belt Clouds
C.
summer clouds
D.
winter clouds
【单选题】These natural veins of marbles are spoken of as “______”.
A.
Natural weavings
B.
Natural Chinese Paintings
C.
Natural Oil Paintings
D.
Natural landscapes
【单选题】Hand motions in Beat 5 of the Waist-twining Silk-flinging: Raise both arms forward to （ ） degrees in the upper left and fling the silk, make two arms form a （ ）-degree angle.
A.
45、45
B.
45、60
C.
60、60
D.
60、45
【单选题】InTibetan culture, what does the term “Shangrila” mean？
A.
a dreamlike paradise
B.
the sun and the moon in the heart
C.
a peaceful lake
D.
a holy place
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