设函数f(x)在区间[a,b]上连续,且f(x)>0,则方程实根有()。 A.0个 发布时间:2017-12-19 09:21 │ 来源:www.tikuol.com 题型:单项选择题 问题: 设函数f(x)在区间[a,b]上连续,且f(x)>0,则方程实根有()。A.0个B.1个C.2个D.无穷多个
题型:单项选择题 After visiting China, most of the foreign friends said they would never forget the time _____ they had spent in China.[ ]A. whatB. that C. when D. at which 查看答案
题型:单项选择题 ( )不能体现企业投^经费进行培训的效益。A.任职者提高完成本职工作的质量B.为企业中长期的人才需求做好储备C.任职者完成超过本职位技能要求的工作D.培训赞增加.增强企业知名度 查看答案