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【判断题】
经编复合土工布是以玻璃纤维(或合成纤维)为增强材料，通过与短纤针刺无纺布复合而成的新型土工材料。()
A.
正确
B.
错误
举报
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【多选题】玻璃纤维滤筒的特点有（）。
A.
对0.5um以上尘粒的搜捕效率达99.9%以上。
B.
可承受1000℃高温。
C.
在200℃下使用1h，滤筒失重在2mg以下。
D.
在400℃下使用1h，滤筒失重约5mg。
【单选题】E Last year, Shanghai-born Charles K. Kao and two North American scientists got the 2009 Nobel Prize(诺贝尔奖) in Physics together. Their work made the Internet come into a new age. Kao, 77, was born in ...
A.
Kao’s work makes the Internet information transmit faster around the world.
B.
Kao is still working in the Chinese University of Hong Kong now.
C.
Willard Boyle and George Smith are both scientists.
D.
Kao is died now.