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【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
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参考答案:
举一反三
【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
查看完整题目与答案
【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
查看完整题目与答案
【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.
查看完整题目与答案
【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.
查看完整题目与答案
【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
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【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
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【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
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【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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【单选题】When the synchronous generator is connected in quasi synchronous parallel with the power grid, all other conditions are met except that the generator voltage is only less than 5% of the power grid vol...
A.
Generate huge current, so that the generator cannot be paralleled
B.
Generate a small current, which is inductive current
C.
Generate a small current, which is a capacitive current
D.
Generate a small current, which is an active current
查看完整题目与答案
【单选题】In the process of generator paralleling, when the phase of generator voltage and system voltage is inconsistent, impulse current will be generated. The maximum value of impulse current occurs when the...
A.
0°
B.
90°
C.
180°
D.
100°
查看完整题目与答案
相关题目:
【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
查看完整题目与答案
【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
查看完整题目与答案
【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.
查看完整题目与答案
【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.
查看完整题目与答案
【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
查看完整题目与答案
【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
查看完整题目与答案
【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
查看完整题目与答案
【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
查看完整题目与答案
【单选题】When the synchronous generator is connected in quasi synchronous parallel with the power grid, all other conditions are met except that the generator voltage is only less than 5% of the power grid vol...
A.
Generate huge current, so that the generator cannot be paralleled
B.
Generate a small current, which is inductive current
C.
Generate a small current, which is a capacitive current
D.
Generate a small current, which is an active current
查看完整题目与答案
【单选题】In the process of generator paralleling, when the phase of generator voltage and system voltage is inconsistent, impulse current will be generated. The maximum value of impulse current occurs when the...
A.
0°
B.
90°
C.
180°
D.
100°
查看完整题目与答案
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