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【多选题】
关于光的衍射现象,下列说法正确的是A.
光偏离直线传播路径进入几何阴影区，并形成光强非均匀稳定分布
B.
波阵面上各面可以视为子波源，空间任一点振动是所有子波在该点所产生振动的相干叠加
C.
单缝衍射和双缝干涉的明暗纹条件彼此矛盾
D.
中央宽度为其余宽度的两倍
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举一反三
【简答题】Please choose a appropriate word from the two words given in the parenthesis and fill it in the blank.Another way of saying "dormitory" is "student ______ " (residency/residence)
【单选题】The word "home" can be defined conceptually by the feature "place of residence for human beings", which is the meaning of a word. But to most people, home stands for something more than house,. It als...
A.
grammatical, lexical
B.
conceptual, social
C.
conceptual, affective
D.
denotative, connotative
【判断题】In the sentence “He lives in a WHITE house. “, the word “ white ” is stressed and the sentence means he lives in the official residence of the American president.
A.
正确
B.
错误
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