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【单选题】
The loss of heat resulting from the loss of water from the body's surface is
A.
radiation.
B.
evaporation.
C.
conduction.
D.
convection.
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【单选题】The scientists are still working on ___ ____ new methods of reaching outer space.
A.
invention
B.
inventor
C.
invent
D.
inventing
【判断题】14为了提高传热效率,采用蒸汽加热时必须不断排除冷凝水并及时排放不凝性气体。
A.
正确
B.
错误
【简答题】根据短文内容,从下面表格中选择正确的选项填入横线空格处。 A. Scientists are still working on testing them. B. So some clever farmers have solved (解决) the watermelon problem. C. Doctors might be able to use vegetables to fight can...
【单选题】(2013·青岛一模)Scientists are still wondering ________ the Egyptians built the pyramids so long ago.
A.
how it is that
B.
how is it that
C.
it is how that
D.
that how it is
【简答题】________4 Scientists are still unable to satisfactorily explain why we yawn.
【单选题】Scientists are still unable to come to a/an ______ as to the probable cause of earthquake.
A.
elaboration
B.
prediction
C.
conclusion
D.
resolution
【单选题】一项100万的借款,借款期限为3年,年利率8%,如果每半年复利一次,则有效年利率会高出名义利率( )。
A.
4%
B.
0.24%
C.
0.16%
D.
0.8%
【判断题】为了提高传热效率,采用蒸汽加热时必须不断排除冷凝水并及时排放不凝性气体。
A.
正确
B.
错误
【简答题】Today, scientists are still concerned about the _______ of some rare species of animals.
【判断题】为了提高传热效率,采用蒸汽加热时必须不断排除冷凝水并及时排放不凝性气体。 ( )
A.
正确
B.
错误
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