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问题 单项选择题

江某向某银行贷款5万元，借款到期前三个月，江某明确告知银行没钱还款，无法履行还款义务，某银行主张江某承担违约责任。请问某银行依据的是什么权利保护债权？（）

A、不安抗辩

B、先履行抗辩

C、预期违约

D、同时履行抗辩

答案

参考答案：C

判断题

溢流阀通常接在液压泵出口处的油路上，它的进口压力即系统压力。
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单项选择题

An analyst does research about total, marginal and average product curve of labor. As more labor is hired, which of the following curves initially increases and then decreases

A. The average product of labor curve, but not the total and marginal product of labor curve.
B. The marginal product of labor curve, but not the total and average product of labor curve.
C. Both the marginal product of labor and the average product of labor curve, but not the total product of labor curve.
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