皮皮学，免费搜题
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搜题
【单选题】
某医药企业生产5种感冒止咳类药、8种胃肠消化类药、3种皮肤外用类药。那么该企业的产品线有( )。A.
5条
B.
8条
C.
16条
D.
3条
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】以下对于吗啡的化学结构特征阐述错误的是
A.
含有叔胺基团，所以显碱性
B.
含有氧桥键，所以很稳定
C.
含有酚羟基，所以显酸性
D.
7,8位含有双键，所以可以被还原
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【简答题】Use your American Express Card to enjoy one-day privileges at four of America’s greatest museums. Note the participating museums, and their exciting special exhibitions that you will not want to miss,...
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