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问题
单项选择题
()
A.
B.
C.
D.
答案
参考答案:
C
选择题
Sina said she _________to school the next Saturday.
A. didn't go
B. isn't go
C. wouldn't go
D. won't go
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单项选择题
大型发电机的额定功率因数为()
A.0.8
B.0.82
C.0.85或0.9
D.0.95
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