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【单选题】
鉴别二甲醚和乙醇可采用化学方法或物理方法，下列方法不能对二者进行鉴别的是A.
利用金属钠或金属钾法
B.
利用红外光谱法
C.
利用质谱法
D.
利用核磁共振氢谱法
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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】水痘皮疹的分布特点为
A.
全身弥漫性分布
B.
向心性分布，自躯干→面、头
C.
多分布在四肢、臀部，尤以下肢为主
D.
自面部、颈→躯干→四肢
E.
颈躯干多见，一日出齐
【简答题】阅读理解。 It is hardly surprising that clothing manufacturers (生产商) follow certain uniform standards for various features (特征) of clothes. What seems strange, however, is that the standard adopted for wom...
【单选题】C It is hardly surprising that clothing manufacturers （生产商）follow certain uniform. standards for various features（特征）of clothes. What seems strange , however, is that the standard adopted for women is...
A.
It has been followed by the industry for over 400 years.
B.
It is different for men’s clothing and women’s.
C.
It woks better with men than with women.
D.
It fails to consider right-handed people.
【单选题】某国际航行固体散货船,船长100m,则其载重线标志中勘绘于垂直线的船首方向的载重线有 。
A.
冬季载重线
B.
北大西洋冬季载重线
C.
夏季淡水载重线
D.
A、B均是
【单选题】某国际航行固体散货船,船长100m,则其载重线标志中勘绘于垂直线的船首方向的载重线有:()1冬季载重线;2北大西洋冬季载重线;3夏季淡水载重线
A.
①
B.
.②
C.
③
D.
①②
【简答题】It's hardly surprising that weather is a favorite topic for so many people around the world—it affects where we choose to live, what we wear, our moods, and perhaps even our national characteristics.S...
【简答题】阅读理解 It is hardly surprising that clothing manufacturers(生产商) follow certain uniform standards for various features(特征) of clothes. What seems strange, however, is that the standard adopted for women ...
【单选题】某国际航行固体散货船，船长100m，则其载重线标志中勘绘于垂直线的船首方向的载重线有（ ）。I冬季载重线；II北大西洋冬季载重线；III夏季淡水载重线
A.
I
B.
II
C.
III
D.
I，II均是
【简答题】请撰写出毕业论文答辩的一般要求和答辩程序。
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