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【判断题】
备用电源和备用设备自动投入装置的动作时间的确定,是以使负荷的停电时间尽可能短为原A.
正确
B.
错误
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【简答题】阅读理解。 My name is Carol. I'm seen and I'm from Australia. I have two sisters. Eileen is thir and Ruth is eleven. We are all students now. But I want to be a policeman in the future (将来), I thi...
【单选题】I have two sisters. One is a doctor, _______ is a teacher.
A.
other
B.
another
C.
the other
D.
others
【单选题】I have two sisters. are teachers.
A.
Both of them
B.
All of them
C.
Either of them
D.
Neither of them
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【单选题】I have two sisters. One is a teacher, ____ is a doctor. [ ]
A.
other
B.
another
C.
others
D.
the other
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