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【单选题】
光纤成缆工艺中,芳纶纱、玻璃纤维一般常用于光缆的( )结构。
A.
加强件
B.
铠装层
C.
松套管
D.
护套
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【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.
相关题目：
【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.
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