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【单选题】
同步发电机并,调节原动机的调速器可以进行( )的转移和分配。A.
有功功率
B.
有功及无功功率
C.
无功功率
D.
励磁功率
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举一反三
【单选题】—When were you born? —I was born _____________. [ ]
A.
in June three, 1989
B.
on June the third, 1989
C.
in June third, 1989
D.
on June the three, 1989
【单选题】It is implied that __________ 查看材料
A.
powerful earthquakes usually occur after minor ones
B.
modem facilities add to the danger of an earthquake
C.
passing trucks are as dangerous as minor earthquakes
D.
there is a powerful earthquake occurring every two years
【单选题】The function of the computer mentioned in the passage is to____,
A.
counterbalance an earthquake's action on the building
B.
predict the coming of an earthquake with accuracy
C.
help strengthen the foundation of the building
D.
measure the impact of an earthquake's vibrations
【单选题】—When were you born? —I was born _______. [ ]
A.
in June three,1989
B.
on June third,1989
C.
in June the third,1989
D.
on June the three,1989
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