视觉诱发电位刺激釆用()A．温热刺激 B．电刺激 C．声刺激 D．光刺激 E 发布时间：2017-07-12 07:37 │ 来源：www.tikuol.com 题型：单项选择题 问题： 视觉诱发电位刺激釆用()A．温热刺激 B．电刺激 C．声刺激 D．光刺激 E．机械刺激
题型：单项选择题 阅读下面短文，从方框中选出适当的词填空。free live healthy playing friends In ten years, I think I'll be a teacher, because I like 1 with children. I'll meet lots of interesting students,and I'll also be able to make 2 with foreign teachers. I think I'll 3 in Beijing in ten years. But as a Chinese, Ihope that I can tour all places of interest in our country.I' II keep a pet dog at home in ten years, although I don' t have 4 time now. And I am sure I'll also have many good friends in ten years. Probably I'll learn judo(柔道), because that is one of my dreams. I'll look after my health, so I'll exercise more, and I'll eat 5 food every day. I will work hard from now on! 查看答案
题型：单项选择题 某水库堤坝因年久失修，发生了渗水现象，当发现时已有200m2的坝面渗水．经测算知渗水现象正在以每天4m2的速度扩散．当地政府积极组织工人进行抢修．已知每个工人平均每天可抢修渗水面积2m2，每人每天所消耗的维修材料费75元，劳务费50元，给每人发放50元的服装补贴，每渗水1m2的损失为250元．现在共派去x名工人，抢修完成共用n天．（Ⅰ）写出n关于x的函数关系式；（Ⅱ）要使总损失最小，应派去多少名工人去抢修（总损失=渗水损失+政府支出）． 查看答案