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【单选题】
According to paragraph 2 and 3,______.A.
people should be prepared to admit that being employed is not the only kind of work
B.
people should set up smaller private enterprises so that they in turn can employ others
C.
universal employment guaranteed prosperity
D.
patterns of work were fundamentally unchanged despite the arrival of the industrial age
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【简答题】R、L、C串联电路中,电路复阻抗虚部大于零时,电路呈 性;若复阻抗虚部小于零时,电路呈 性;当电路复阻抗的虚部等于零时,电路呈 性,此时电路中的总电压和总电流相量的相位 ,称电路发生串联 。
【单选题】John H. Glenn, Jr. , was the first American to
A.
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B.
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C.
orbit the earth
D.
fly over 60,000 miles
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