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【判断题】
自同期并列是不给发电机加励磁电流，直接将发电机并入电网，由系统将发电机拖入同步。A.
正确
B.
错误
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举一反三
【简答题】四大天然纤维中短纤维有( )、( )。
【单选题】听力原文： Before World War n, we spent our summer holidays in Hungary. I have only the dim memory of the house we lived in, of my room and my toys. Nor do I recall clearly the large family of grandparents...
A.
He was first of all a scientist.
B.
He was not only a naturalist but also a scientist.
C.
He was no more than a born naturalist.
D.
He was a scientist as well as a naturalist.
【单选题】听力原文： Before World War II, we spent our summer holidays in Hungary. I have only the dim memory of the house we lived in, of my room and my toys. Nor do I recall clearly the large family of grandparent...
A.
Because the family was extremely large.
B.
Because he didn't live very long with them.
C.
Because he was too young when he lived with them.
D.
Because he was fully occupied with observing nature.
【单选题】在 bootstrap中,以下的()不是文本对其的方式。
A.
.text-left
B.
.text-middle
C.
.text-right
D.
.text-justify
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