问题
单项选择题
以下关于空间分辨率的表述哪一项是错误的
A．CT的空间分辨率是指CT鉴别物体空间大小的能力
B．不同图像重建算法可影响CT的空间分辨率
C．通常以百分比来表示CT的空间分辨率
D．空间分辨率高，CT显示的线对数也高
E．CT的空间分辨率与被测物体的密度有关
答案
参考答案：E
搜题请搜索小程序“爱下问搜题”
以下关于空间分辨率的表述哪一项是错误的
A．CT的空间分辨率是指CT鉴别物体空间大小的能力
B．不同图像重建算法可影响CT的空间分辨率
C．通常以百分比来表示CT的空间分辨率
D．空间分辨率高，CT显示的线对数也高
E．CT的空间分辨率与被测物体的密度有关
参考答案：E
任务型阅读。完成表格。 A solar-powered（太阳能动力的）plane has passed an important test on the way to travel around the world. The plane took off from an airport in Switzerland at 45km an hour. It slowly rose above the fields and into the sky. During the 90-minute flight, the plane did several turns. It climbed nearly l.6km above the countryside. "There has never been an airplane of that kind that could fly-never an airplane so big, so light, using so little energy," said Bertrand Piccard, a leader of the project. Engineers plan to test a night flight soon. They plan to travel around the world in that plane in 2012. "We want to fly it day and night with no fuel (燃料). " Piccard said. Piccard and the pilot Andre Borschberg will take the plane around the world. They will make a few stops to change places and rest after a long time in the air and to show off their aircraft. The plane flies at 70 kilometers per hour on average. That is faster than a bike. The pilots will keep the plane in the air for up to five days at a time.
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