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【单选题】
经营者采用网络方式销售商品的,消费者在收到商品之日起七日内无理由退货且经营者和消费者无约定的,退回商品的运费由( )。
A.
经营者承担
B.
消费者和经营者共同承担
C.
网络交易平台承担
D.
消费者承担
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参考答案:
举一反三
【单选题】The little baby was very excited ( )the sight of his mother.
A.
in
B.
at
【判断题】高斯低通滤波器在选择小的截止频率时存在振铃效应和模糊现象。
A.
正确
B.
错误
【判断题】植物缺氮时,植株矮小,叶小色淡或发红。( )
A.
正确
B.
错误
【判断题】高斯低通滤波器在选择小的截止频率时存在振铃效应和模糊现象。
A.
正确
B.
错误
【单选题】The little baby was very excited ( )the sight of his mother.
A.
in
B.
at
C.
with
D.
to
【判断题】植物缺氮时,植株矮小,叶小色淡或发红。( )
A.
正确
B.
错误
【单选题】When were the chemicals first used in America?
A.
Before the American Revolution.
B.
Over thirty years ago.
C.
Over two hundred years ago.
D.
Before the discovery of potassium nitrate.
【单选题】The T-shirt was first used as uniform by the ______ in America.
A.
Air Forces
B.
Army
C.
Navy
D.
Police
【简答题】松驰荷载理论建立的是()力学体系。
【判断题】America first used fireworks in 1777 to commemorate Independence Day.
A.
正确
B.
错误
参考解析:
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