被测信号源内阻为10kΩ,如果达到0.005%准确度,对所用的DVM来说,要求它的输 发布时间:2018-11-25 11:37 │ 来源:www.tikuol.com 题型:单项选择题 问题: 被测信号源内阻为10kΩ,如果达到0.005%准确度,对所用的DVM来说,要求它的输入电阻至少()MΩ。A、400B、600C、800D、200
题型:单项选择题 某30层的高层公共建筑,其避难层净面积为1220m2,需设机械加压送风系统,符合规定的加压送风量是哪几项?()A.34200m3/hB.37500~34200m3/hC.38000~34200m3/hD.40200~34200m3/h 查看答案
题型:单项选择题 Man: I like the color of this shirt. Do you have a larger size Woman: This is the largest in this color. Other colors come in all sizes. Question: What does the woman imply().A. The man could buy a shirt of a different color.B. The size of the shirt is all right for the man.C. The size the man wants will arrive soon.D. The man could come some time later. 查看答案
题型:单项选择题 某超市有一部分见习生,按超市规定,见习生头三个月每月只能拿800元工资。小李是某超市员工,她每月拿800元工资。据此,我们可以推出( )。A.有一部分拿800元月工资的是见习生B.小李是见习生C.只要不是见习生,工资就会超过800元D.小李遵守超市规定 查看答案