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【单选题】
What is this lecture mainly about?A.
An overview of fuel cell technology
B.
A process for producing fuel cells
C.
A comparison of fuel cell models
D.
Some problems in fuel cell distribution
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【单选题】(2013·陕西高考)It remains to be seen ________ the newly formed committee's policy can be put into practice.
A.
that
B.
which
C.
what
D.
whether
【单选题】(2013·高考陕西卷)It remains to be seen________the newly formed committee’s policy can be put into practice.
A.
that
B.
which
C.
what
D.
whether
【简答题】一数一源能够保证主题数据库中数据的及时、准确和（）。
【单选题】下列选项中,能够满足“若字符串s1等于字符串s2,则执行ST"要求的是
A.
if （strcmp（s2,s1）==0）ST;
B.
if （sl==s2）ST;
C.
if （strcpy（s l ,s2）==1）ST;
D.
if （sl-s2==0）ST
【单选题】Analyze the following statement, and then choose one of the options that you think is best to use in academic writing:To test whether these two species may possibly coexist in the same biotope, we tri...
A.
To test whether these two species coexist in the same biotope, we applied our newly developed method.
B.
To test whether these two species might coexist in the same biotope, we applied our newly developed method.
C.
To test whether these two species could coexist in the same biotope, we applied our newly developed method.
D.
To test whether these two species can possibly coexist in the same biotope, we applied our newly developed method.
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