将两滴等量的水分别滴在两块玻璃板上，其中被加热的水滴先消失．说明：______． 发布时间：2017-06-09 22:21 │ 来源：www.tikuol.com 题型：问答题 问题： 将两滴等量的水分别滴在两块玻璃板上，其中被加热的水滴先消失．说明：______．
题型：问答题 阅读理解，并填表。 From 8:30pm to 9:30 pm on Saturday, March 26th, 2011, a great number of people around the world turned off the lights for Earth Hour. It is a bit like an environmental New Year, providing achance to help care for our earth and make people around the world learn how important it is to dothat. What can do during this hour? We can do lots of run things in the dark, such as planning acandlelight dinner for our family or a group of friends, telling stories and singing songs with the kids and neighbors. What did you do for Earth Hour this year? Let's share the Earth Hour stories. Emma I was on one of the mountains near the city and took photos of my city. It was great to watch the stars and the moon after a busy day so that I could enjoy this relaxing moment. Albert I work as a waiter in a restaurant. Our restaurant was still open even for Earth Hour as we got lots of reservations (预定) that night. So we spent the hour working by candlelight. And guess what? Ourcustomers loved that and promised to come for next Earth Hour. Brandon I turned off the main power to my house and went for a walk for Earth Hour. It was a little strange to walk in the dark, but it was only for one hour. Just think of what it must have beenlike before the invention of the light bulb! Mary I invited my friends who know and support Earth Hour activities. We actually had a candlelightconcert and we talked about the old happy days that we spent together in college. The date of Earth Hour in 2011 1_______Albert's job 2_______What Brandon did when it was dark3_______Who stayed with Mary during the hour4_______The number of people who talked about their stories5_______ 查看答案
题型：问答题 影响照片影像密度的因素错误的是（）A.正常曝光时，密度与照射量成正比B.管电压增加，照片密度增加C.被照体厚度、密度增加，影像密度增加D.摄影距离增大，密度降低E.与照片的显影加工条件有关 查看答案
