(x2-1)2在复数域上中有几个根?() ["1.0","2.0","3.0","4.0"]
典型岩石蠕变曲线包括()三个阶段。 ["弹性变形","减速蠕变","等速蠕变","加速蠕变"]
对个体身心发展起主导作用的因素是() ["遗传因素","社会环境","学校教育","主观努力"]
尽管债务人目前有能力偿还贷款本息,但存在一些可能对偿还产生不利影响的因素,这种贷款的风险程度是() ["次级","可疑","关注","损失"]
微观消费结构
B2B交易的优势在于交易成本大大降低,具体表现为哪些方面?