题目内容
（请给出正确答案）
A.都能生成三维实心体模型
B.都能生成三维多边形网格
C.都需要以直线LINE作为旋转轴
D.都能以任何开放或封闭对象作为路径曲线
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更多“REVOLOVED，SURFACE和REVOLOVE命令的共…”相关的问题
Warming waters are known to (28)to coral bleaching(珊瑚白化) and they take up more space than cooler waters, raising sea (29). While the top of the ocean is studied, its depths are more difficult to (30)The researchers gathered 150 years of ocean temperature data in order to get better (31)of heat absorption from surface to seabed. They gathered together temperature readings collected by everything from a 19th century (32)of British naval ships to modern automated ocean probes. The extensive data sources, (33)with computer simulations(计算机模拟), created a timeline of ocean temperature changes, including cooling from volcanic outbreaks and warming from fossil fuel (34).
About 35 percent of the heat taken in by the oceans during the industrial era now residents at a (35)of more than 700 meters, the researchers found. They say they&39;re unsure(36)whether the deep-sea warming canceled out warming at the sea&39;s surface.
A absorb
B combined
C contribute
D depth
E emission
F.explore
G explore
H.floor
I.heights
J.indifferent
K level
L.mixed
M picture
N unsure
O voyage
The source of the sun' s inconstancy is magnetism. Professor William Livingston has developed new theories about its magnetic nature.
"We don' t yet know what causes sun spots, "he says, "but we now think they ' re areas of high level magnetism that come up from the sun' s interior. So strong is their magnetic pull that the highly ionized gas nearby is not able to transmit energy out. "As a result these areas send out less heat and light and thus appear from Earth to be almost dark irregular surface patches.
Sun spot activity generally fluctuates in steady, 11-year cycled. Scientists have long formed the o pinion that as the size and number of sun spots increased, the overall energy sent out by the sun would de crease. Indeed, recent studies confirmed it, revealing that during peak periods of sun spot activity, the Earth experiences a small drop that can be seen clearly in received solar energy.
Could such a small drop in energy have an effect here on earth？ Perhaps some scientists think the world temperature could fall by' as much as 0.2 during periods of high solar magnetism.., enough to cause significant fluctuations in weather patterns.
According to the passage, it is believed that the sun ______ ．
A．moves in a quick but steady way year after year
B．sends out less and less heat and light with each passing year
C．radiates the same amount of light every year
D．might have a strong influence on the weather patterns
The word “surface” in the passage means the ______．
A.market
B.air
C.top of a liquid
D.sea
Earth has an atmosphere, which protects the surface from harmful rays.
A．minerals
B．substances
C．gases
D．beams
A.is
B.are
C.was
D.were
Advection fog may be formed by cold air passing over a ______.
A.colder sea surface
B.warmer sea surface
C.dry coastal plains
D.high mountain or plateau
The use of sinking and dispersing chemical agents for removal of surface oil is ______.
A.the most common method used in the United States
B.too expensive for common use
C.generally safe to sea life
D.authorized only with prior approval of the Federal On-Scene Coordinator
A.free surface effects
B.capsizing the ship
C.continued progressive flooding
D.wind overturning moments
