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【多选题】

以下哪些是时间反演对称的()?

A.
牛顿第二定律
B.
微观定律
C.
小球落地
D.
墨水散开
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参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】点(﹣2,4)关于x轴对称的点的坐标是 [ ]

A.
(﹣2,﹣4)
B.
(﹣2,4)
C.
(2,﹣4)
D.
(2,4)

【单选题】Now, our biggest summertime question has been answered: Why do people look so much better in sunglasses Vanessa Brown, a senior lecturer of art and design at Nottingham Trent University, gave an insid...

A.
demonstrate how to make better use of sunglasses
B.
explain why sunglasses improve appearance
C.
describe the evolution of sunglasses
D.
introduce the major functions of sunglasses

【单选题】下列不属于对称密钥加密的是 ()

A.
DES 加密算法
B.
AES 加密算法
C.
RSA 算法
D.
IDEA加密算法