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【单选题】
在 Windows7 中,对桌面背景的设置可以通过()。A.
鼠标右击“我的电脑”
B.
鼠标右击桌面空白处，在打开的快捷菜单中选择选择“个性化”
C.
鼠标右击“开始菜单”
D.
鼠标左击桌面空白处，选择“个性化”
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【单选题】In the author’S opinion．in order to enhance public’S awareness of climate change，the universities should_______．
A.
make more videos to popularize scientific findings
B.
encourage scientist to communicate more with the public
C.
make more public intellectuals of social scientists
D.
restrain the time allocated by scientists to unpractical researches
【单选题】All of the following can be found in the author's discussion of climate except______.
A.
an indication of the effect of an increase in water vapor in the atmosphere
B.
a contrast between two theories about the effects of a lowering of carbon dioxide levels in the atmosphere
C.
a generalization about the efficiency of meteorological recording stations
D.
hypothesis about the relationship between atmospheric gases and changes in climate
【简答题】In today’s corporate climate, most regular salary hikes have shrunk or disappeared.(翻译)
【单选题】The world's demand on gas is expected to increase in the future as climate change concerns grow, while renewable energy is still expensive to be developed, a prominent economist said on Friday. 'Deman...
A.
How long shall we wait to use the renewable energy?
B.
Renewable energy is getting cheaper as technology becomes more advanced.
C.
Climate change concerns results in revolution on the use of energy.
D.
Gas demand is to sharply increase as climate change concerns grow.
【单选题】下列有关成膜材料 PVA 的叙述中,错误的是( )。
A.
具有良好的成膜性及脱膜性
B.
其性质主要取决与分子量和醇解度
C.
国内常采用 05-88 和 17-88 的规格
D.
PVA 属于 合成 高分子化合物
E.
PVA 是 乙烯 - 醋酸乙烯共聚物的缩写
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