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问题
单项选择题
同样蒸汽参数条件下,顺序阀切换为单阀,则调节级后金属温度()。
A、升高;
B、降低;
C、可能升高也可能降低;
D、不变。
答案
参考答案:A
选择题
He was educated at a local grammar school, ______ he went on to Cambridge.
A. from which
B. after that
C. after which
D. from this
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填空题
逻辑学的创始人、古典形式逻辑的奠基者是()。
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