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搜题
【单选题】
用 渥拉斯顿 棱镜将一束 He-Ne 激光分成强度相等的两 , 这两 ( ) 。A.
相 干
B.
不相干
C.
具有相同的偏振方向
D.
具有不同的颜色
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皮皮学刷刷变学霸
举一反三
【多选题】When we introduce ourselves or other people, usually we talk about from the following aspects:
A.
occupation
B.
salary
C.
hobby
D.
hometown
【简答题】Usually when we talk about the ethos of a people or a nation, we specifically refer to people’s ___, ideals, __, ethics, morals, dreams, and __.
【简答题】北疆线是我国通往（ ）的铁路干线。
【判断题】When we talk with a stranger, we usually use Sir when he is a man and Miss or Madam for a woman.
A.
正确
B.
错误
【判断题】When we talk with a stranger, we usually use Sir when he is a man and Miss or Madam for a woman.
A.
正确
B.
错误
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