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假设合同双方当事人互负债务，且没有先后履行顺序，不符合法律规定的是（)。A．双方应当同时履行各自

假设合同双方当事人互负债务，且没有先后履行顺序，不符合法律规定的是()。

A．双方应当同时履行各自所负的债务

B．一方当事人在对方当事人履行之前有权拒绝其履行请求

C．一方当事人在对方当事人履行债务不符合约定时，有权拒绝其相应的履行要求

D．一方当事人在对方当事人履行债务不符合约定时，有权拒绝其相应的履行要求，但必须向对方提供相应的担保

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第3题

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第5题

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