皮皮学，免费搜题
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【单选题】
使用分光光度计测量吸光度，为了使测得的吸光度更精确，则应（ ）。A.
在最大吸收波长进行测定。
B.
用比较厚的比色皿。
C.
合适浓度范围的测定液。
D.
选择合适的波长，比色皿及溶液浓度，使吸光度值落在0.2~0.8区间内。
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【单选题】Public speaking fills most people with dread. Humiliation is the greatest fear self-exposure and failing to appeal to the audience come a close second. Women hate it most, since girls are pressurized ...
A.
looking foolish
B.
failing in words
C.
not attracting attention
D.
appearing pressurized
【单选题】Of the dangers in everyday life, the author thinks that people have most to fear from______.
A.
the uncertain
B.
an earthquake
C.
the quantifiable
D.
unhealthy food
【单选题】Earthquakes are something that most people fear. There are some places that have【71】or no earthquakes. Most places in the world, 【72】, have them regularly. Some places, 【73】Iran and Guatemala have the...
A.
less
B.
much
C.
few
D.
little
【单选题】Public speaking fills most people with dread. Humiliation is the greatest fear serf-exposure and failing to appeal to the audience come a close second. Women hate it most, since girls are pressurized ...
A.
looking foolish
B.
failing in words
C.
not attracting attention
D.
appearing pressurized
【单选题】混合型国际分工是垂直型分工和水平型分工混合起来的分工形式,比较典型的代表是
A.
中国，对发展中国家是垂直型分工，对其他发达国家是水平型分工
B.
中国，对发展中国家是水平型分工，对其他发达国家是垂直型分工
C.
德国，对发展中国家是垂直型分工，对其他发达国家是水平型分工
D.
德国，对发展中国家是水平型分工，对其他发达国家是垂直型分工
【单选题】Public speaking fills most people with dread. Humiliation is the greatest fear self-exposure and failing to appeal to the audience come a close second. Women hate it most, since girls are pressurized ...
A.
their upbringing very early on
B.
their inability to appeal to the audience
C.
their sense of greater public pressure
D.
their sense of greater humiliation
【单选题】听力原文： Earthquakes are something that most people fear. There are some places that have few or no earthquakes. Most places in the world, however, have them regularly. Some places, like Iran and Guatema...
A.
Frequently.
B.
Occasionally.
C.
Seldom.
D.
Regularly.
【单选题】Public speaking fills most people with dread. Humiliation is the greatest fear~ self-exposure and failing to appeal to the audience come a close second. Women hate it most, since girls are pressurized...
A.
their upbringing very early on
B.
their inability to appeal to the audience
C.
their sense of greater public pressure
D.
their sense of greater humiliation
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