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【简答题】
分子式为C 3 H 8 O的化合物其质谱图如下图。红外吸收光谱表明,该化合物在3640cm -1 和1065~1015cm -1 处有尖而强的吸收峰,试解析该化合物的分子结构。
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举一反三
【单选题】What is Mr. Chen's attitude towards commission?
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B.
It depends on the size of the order
C.
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A.
Labour-market flexibility will be reduced.
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Corporate form-filling and regulation will become simple.
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A new directive will be devised.
【单选题】根据集装箱术语标准,集装箱的内容体积立方数大于或等于( )。
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1m3
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5m3
C.
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There will be no commission at all.
B.
Miss Young is very happy to grant commssion.
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【单选题】根据集装箱术语标准,集装箱的内容体积立方数大于或等于
A.
1m 3
B.
5m 3
C.
20m 3
D.
40m 3
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A.
1m³
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A.
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A.
An error where one side of a transaction has been recorded in the wrong account, and that account is of the same class as the correct account
B.
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C.
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D.
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