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【判断题】
Since there are many variables and constraints in the transportation problem, the x method can not be used to solve ( )
A.
正确
B.
错误
举报
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Beat 5 in the Worshiping Kwan-Yin: Lift the left foot and land in front of the right foot to the ( ).
A.
upper right
B.
right front
C.
upper left
D.
left front
【单选题】After the current flows through the generator winding, it will generate loss and heat in the conductor of the winding. This loss is called ().
A.
iron loss
B.
copper loss
C.
eddy-current loss
D.
Other loss
【单选题】What does “Potatso” mean in Tibetan culture?
A.
a lake in the shape of a ferry
B.
a sacred lake
C.
a place full of light
D.
a peaceful paradise
【单选题】In order to improve the static stability of synchronous generators connected in parallel with infinite power grid, we should ()
A.
Reduce the excitation current and reduce the output power of the generator
B.
Increase the excitation current and reduce the output power of the generator;
C.
Reduce excitation current and increase generator output power;
D.
Increase the excitation current and increase the output power of the generato.
【单选题】Potatso was the first ______ in mainland China.
A.
geological park
B.
national park
C.
ecological park
D.
biological park
【单选题】What does “Shudu” mean in the Tibetan language?
A.
the dense forest
B.
the cheese as solid as stone
C.
herds of cattle
D.
the nutritious grass
【单选题】The following statement about the characteristics of the model of production and marketing balanced transportation is correct ( )
A.
The coefficient matrix of constraint equation is unit matrix
B.
The number of basic variables is m + n
C.
The basic variable can not be zero
D.
The rank of coefficient matrix is equal to m + n-1
【单选题】下列有关胃CT检查技术的叙述,错误的是()
A.
对进展期胃癌,检查目的主要在于肿瘤的分期
B.
胃CT检查充盈不足会导致评价错误,因此以胃过度充盈为最佳
C.
扫描前需用胃肠低张力药物以减少胃肠蠕动
D.
鉴别肿瘤时可采用低张胃充水扫描结合增强扫描技术
E.
可用SSD、MIP后处理技术显示胃肿瘤