题目内容
德川幕府第一次锁国令颁布于（ ）年。
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德川幕府在1633年至1854年实行了长达200多年的锁国政策。
Fill in the blanks with the information you heard. 1) Q: When will the students start their next important life stage?A: When they finish their ______(1)_______ and get their ____(2)____ .2) Q: What if the students have no idea what to do in the future?A: They don’t need to worry because they still have time to figure out_______(3)_______.
立式壳管式冷凝器属于（ ）冷凝器。
立式冷凝器的冷却水温升约（ ）℃。
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