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【判断题】
连续周期信号的频谱为离散谱A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】听力原文：M: You were very quiet at the meeting this morning. W: What everyone else was saying really interested me. Q: What does the woman mean? (3)
A.
She wanted to make everyone else interested.
B.
She found the meeting uninteresting.
C.
She was listening attentively to the other people.
D.
She wanted everyone at the meeting to be quiet.
【简答题】根据GMP的要求,药品生产企业应如何开展物料管理工作。