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【简答题】
供试品溶液和对照品溶液应交叉点于同一薄层板上,供试品点样不得少于2个,对照品每一浓度不得少于( )个。扫描时,展开方向扫描,不可横向扫描。
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【简答题】在受理客房预订时,首先要确认顾客的 _________ ,以决定是否接受预订,如果不能满足,则应 _________ 。
【简答题】选择适当的词或短语并用其正确形式填空（5分） 1. Lacking necessary money, the small companies ________ one by one during the economic cr two years ago. 2. He is delighted ________ his driving test and now can drive a ca...
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【单选题】Both of them are ______ They both live in
A.
Germany, German
B.
German, Germany
C.
Germans, Germany
D.
Germanies, German
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