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【单选题】
关于Python语句P = –P,以下选项中描述正确的是( )A.
P的值为0
B.
P和P的负数相等
C.
P和P的绝对值相等
D.
给P赋值为它的负数
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C.
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【单选题】“We regret to announce that the boarding gate for Flight CA820 to Beijing has been changed.”意思是说：
A.
登机口变更
B.
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C.
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D.
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