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【单选题】
下列哪项不是基准物质必须具备的条件( )。A.
物质具有足够的纯度
B.
物质的组成与化学式完全符合
C.
物质的性质稳定
D.
物质易溶水
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反馈参考答案：
举一反三
【多选题】下列选项中哪些是管理者为技术活动分配资源过程中存在的难题（）
A.
创新项目的商业计划难以制定
B.
技术投资对公司特有的无形资产的潜在贡献评估困难
C.
不确定性问题难以处理
D.
行业门槛高，竞争激烈
【单选题】Throughout______ history, ______ English language is made up of the rules each group of people brought to Britain with them.
A.
the, the
B.
/,the
C.
the,/
D.
/,/
【简答题】空运单既非航空运输合同，也非在运货物的物权凭证，相反只是一种（）的文件。
【单选题】Historians sometimes forget that history is continually being made and experienced before it is studied, interpreted, and read. These latter activities have their own history, of course, which may imp...
A.
occurrence of s extremely similar to past s.
B.
history of the activities of studying, interpreting, and reading new historical writing.
C.
change in people's understanding of the past due to more recent historical writing.
D.
overturning of established historical interpretations by politically motivated politicians.
E.
difficulty of predicting when a given historical interpretation will be overturned .
【单选题】Whoever invented______ wheel is believed to have made______ most useful invention in______ history.
A.
a; the /;
B.
the; the; /
C.
the;. /; /
D.
a; a; the.
【单选题】What made the history lecture so interesting?
A.
It was about American women instead of the American revolution,
B.
The professor talked about a trip and he was challenged.
C.
The professor made a good speech.
D.
The professor was challenged by a student by his lack of knowledge of female historical character.
【单选题】_______, women have changed history in terms of the contributions they have made.
A.
To some extent
B.
In conclusion
C.
In addition
D.
As a whole
【单选题】Obama made _______ history by being elected as ________ first black president of the US.
A.
不填；the
B.
a; the
C.
a; a
D.
the; a
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