题型：填空题 日常生活和生产接触到的下列物质中，可用作人类营养物质的有______，可用于建筑材料的有______，可作为能源使用的有______．（填序号）①奶酪 ②大理石 ③洗涤剂 ④葡萄糖 ⑤铝合金 ⑥天然气． 查看答案
题型：填空题 此题要求改正所给短文中的错误.对标题号的每一行做出判断: 如无错误, 在该行右边的横线上划(√)；如有错误(每行只有一个错误), 则按下列情况改正:此行多一个词: 把多余的词用斜线划掉, 在该行右边横线上写出该词, 并也用斜线划掉.此行缺一个词: 在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词.此行错一个词: 在错的词下划一横线, 在该行右边横线上写出改正后的词.注意: 原行没有错的不要改.Dear Ron, I was very exciting to hear that you are coming to our56._______school soon. Now let me to introduce our school to you57. _______Our school is a famous school with long history. We58. _______have many experience teachers and excellent equipment.59. _______There are two teach buildings, one is for seniors and the other is60. _______for juniors. There are too one lab building and one dorm 61. _______building. Except Chinese, math, English, physics and chemistry62. _______We still have some electives. The students can choose63. _______whichever they like to attend. We love our school. I am64. _______looking forward to meet you soon.65. _______ 查看答案
题型：填空题 室间质量评价活动中，偏倚的计算公式是（）A.（测定结果－靶值）／靶值×100％B.（测定结果－均值）／标准差C.测定结果／均值×100％D.（测定结果－靶值）E.（测定结果－均值） 查看答案