主页
学科
搜索
账户
常见问题
当前学科：珠宝鉴定师
题目：
判断题
石英、刚玉在七大晶系中属六方晶系。
A . 正确
B . 错误
答案：
<查看本题扣1积分>
查看答案
答案不对？请尝试站内搜索
推荐知识点:
一患者突发抽搐跌倒，口吐白沫，数分钟后自行缓解，送医院放射性核素脑灌注显像提示“右颞叶局部放射性摄取增加”。最合适的诊断是（）
交流发电机的使用维护中要求夜间工作时，应将三个灯都打开，如果有一个灯不打开，将使另两个灯（）。
光纤导管法测量混合静脉血氧饱和度的描述哪一项正确（）
下列属于英国宗教改革独特之处的是（）
Literacy Volunteer Last summer I went through a training program and became a literacy volunteer （扫盲志愿者）. The training I received， though excellent， did not tell me how it was to work with a real student， however. When I began to discover what other people's lives were like because they could not read， I realized the true importance of reading. My first student Jane was a 44-year-old single mother of three. In the first lesson， I found out she walked two miles to the nearest supermarket twice a week because she didn't know which bus to take. When I told her I would get her a bus schedule， she told me it would not help because she could not read it. She said she also had difficulty once she got to the supermarket because she couldn't always remember what she needed. Since she did not know words， she could not write out a shopping list. Also， she could only recognize items by their labels. As a result， if the product had a different label， she would not recognize it as the product she wanted. As we worked together， learning how to read built Jane's self-confidence， which encouraged her to continue in her studies. She began to make rapid progress and was even able to take the bus to the supermarket. After this successful trip， she reported how self-confident she felt. At the end of the program， she began helping her youngest son， Tony， a shy first grader， with his reading. She sat with him before he went to sleep and together they would read bedtime stories. When his eyes became wide with excitement as she read pride was written all over her face， and she began to see how her own hard work in learning to read paid off. As she described this experience， I was proud of myself， too. I found that helping Jane to build her self-confidence was more rewarding than anything I had ever done before. As a literacy volunteer， I learned a great deal about teaching and helping others. In fact， I may have learned more from the experience than Jane did. She could write out a shopping list.（）
《红楼梦》向以高明的艺术笔法赢得中外人士的称颂，书中开篇引了一则神话，而有宝玉、黛玉的“木石前盟”之说，这则神话是哪一则？
如何降低尿素在瘤胃降解率？
子午平面
甲公司按照年度净利润的10%提取法定盈余公积，2×15年1月1日，甲公司股东权益总额为20000万元，其中普通股股本10000万元（10000万股），资本公积6000万元，盈余公积1000万元，未分配利润3000万元。2×15年5月6日甲公司实施完毕经股东大会通过的分配方案，包括以2×14年12月31日的股本总额为基数，以资本公积转增股份每10股普通股转增2股，每股面值1元，以及每10股派发1元的现金股利。2×15年12月31日甲公司实现净利润8000万元，2×15年12月31日甲公司资产负债表下列项目正确的有（）。
放大摄影的定位方法，错误的是（）