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【判断题】
与碳钢相比,合金钢的锻造性能明显下降A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Since entry into high school the students have been ____ staying up late in the evening and getting up early in the morning.
A.
admitted to
B.
allergic to
C.
accustomed to
D.
attached to
【单选题】_____, we kept removing the pistons.
A.
Late as it was
B.
As it was late
C.
Since it was late
D.
Because of its late
【单选题】I was surprised that she was late, ______ since she usually arrived early.
A.
specially
B.
especially
C.
extraordinarily
D.
particularly
【简答题】距离保护是利用正常运行与短路状态间的哪些电气量的差异构成的?
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