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【判断题】
能耗制动就是运转的电动机在断开三相电源的同时，在定子绕组任意两相中通入直流电源进行制动的方法。A.
正确
B.
错误
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举一反三
【单选题】David believes that_______.
A.
robots will be of more and more human characteristics
B.
robotic toy industry will develop fast
C.
scientists can learn from robot films
D.
old people need to take care of robots at home
【简答题】碗主要用于盛放()或者()、()
【单选题】Government is believed to differ strikingly from business in that government is characterized by ______.
A.
Its absolute control of power
B.
Its function in preserving personal freedom
C.
Its role in protecting basic American values
D.
Its democratic way of exercising leadership
【单选题】The United States court system, as part of the federal system of government, is characterized by dual hierarchies: there are both state and federal courts. Each state has its own system of courts, com...
A.
circuit courts
B.
supreme courts
C.
intemediate courts
D.
trial courts
【单选题】65What is characteristic of work in the 21st century?
A.
Computers will do more complicated work.
B.
More will be taken by the educated young.
C.
Most jobs to be done will be the creative ones.
D.
Skills are highly valued regardless of age.
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