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【简答题】
若除去氢气中少量的SO 2 ，H 2 S和水蒸气，氢气先通过溶液，再通过______。
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反馈参考答案：
举一反三
【单选题】What can be inferred from the news?
A.
US President Obama has only focused on the world security issues in his speech.
B.
US President Obama's visit to Moscow aims to build better relations with Russia.
C.
Russia and America have reached consensus on most world security and economic issues.
D.
US President Obama has delivered a speech to graduates of a polytechnic institut
【简答题】下列费用项目中，属于其他项目清单内容列项是（ ）。 A.风险费用 B.暂列金额 C.暂估价 D.总包服务费 E.计日工
【单选题】《九章算术》中的“阳马”是指一种特殊的( )
A.
棱柱
B.
棱锥
C.
棱台
D.
楔形体
E.
：B
F.
.对微积分的诞生具有重要意义的“行星运行三大定律”，其发现者是( )
G.
伽利略
H.
哥白尼
I.
开普勒
J.
牛顿
【单选题】What is the news item mainly about?
A.
Top industrial countries met in the US for the world finance.
B.
Developing economies met in the US for a summit on finance.
C.
G20 leaders met in the US for a summit on future world finance.
D.
Developing and industrial economies met in the US for a summit on finance.
【简答题】电子秤的设计电路包括( )、( )、( )、( )四个部分。
【单选题】_______ supplying news from all over the world, newspapers give us a lot of other useful information.
A.
Other than
B.
Rather than
C.
Except for
D.
Apart from
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