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【判断题】
防紫外线纤维是在常规的化纤产品中添加对紫外线有较强反射或吸收性能的添加剂,使纤维具有防紫外线功能。
A.
正确
B.
错误
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Space is a dangerous place, not only because of meteors (流星) but also because of rays from the sun and other stars. The atmosphere again acts (67) our protective blanket on (68) . Light gets through, ...
A.
from
B.
than
C.
as
D.
away