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【判断题】
电弧光除产生可见光、红外线和紫外线外还会产生对人体伤害较大的X射线。
A.
正确
B.
错误
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参考答案：
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
相关题目：
【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
参考解析：
题目纠错 0
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