为防止满载停车时发生故障,输送机平均倾角大于()A.4 B.3.5 C.18 发布时间:2017-09-30 01:36 │ 来源:www.tikuol.com 题型:单项选择题 问题: 为防止满载停车时发生故障,输送机平均倾角大于()A.4B.3.5C.18
题型:单项选择题 已知函数f(x)=px2+2x-q,对定义域中的所有x都满足f(x)+f(-x)=0,f(2)=5(1)求实数p,q的值;(2)判断函数f(x)在[1,+∞)上的单调性,并证明. 查看答案
题型:单项选择题 患者因三多一少表现拟诊断为糖尿病,做空腹血糖测定,诊断为糖尿病的空腹血糖标准是( )A.≥11.1mmol/LB.≥7.0mmol/LC.>7.0mmol/LD.>3.9mmol/LE.>5.6mmol/L 查看答案
题型:单项选择题 Sometimes an ad can lead you to buy something you don't need at all. "Sometimes" means______. [ ]A. at times B. at other times C. at the same time D. at a time 查看答案