1编号:2181题型:单选题测试正确率:35.33%
计算:
2编号:2180题型:单选题测试正确率:30.26%
3编号:2179题型:单选题测试正确率:41.94%
4编号:2177题型:单选题测试正确率:71.58%
计算:( )
5编号:2054题型:单选题测试正确率:66.37%
6编号:2052题型:单选题测试正确率:49.05%
7编号:2051题型:单选题测试正确率:56.83%
8编号:2050题型:单选题测试正确率:54.92%
9编号:2048题型:单选题测试正确率:62.91%
10编号:577题型:单选题测试正确率:40.0%
数A、B,当 时,规定A◎B=3×A+2×B;当A<B时,规定A◎B=2×A+3×B,若x◎2=7,求x=( )
提醒: