Which of the following shows that a person is NOT dreaming

Which of the following shows that a person is NOT dreaming in his sleep?A.His e

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合同履行中的同时履行抗辩权的法律基础是(  )原则,以平衡当事人之间的利益。

合同履行中的同时履行抗辩权的法律基础是(  )原则,以平衡当事人之间的利益。 A.情事变更 B.适当履行 C.诚实信用 D.协作履行

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