矿山安全技术在矿山开采过程中,矿井水质分析方法有多种,其中( )适用于中等杂质含量 发布时间:2017-07-17 21:12 │ 来源:www.tikuol.com 题型:单项选择题 问题: 矿山安全技术在矿山开采过程中,矿井水质分析方法有多种,其中( )适用于中等杂质含量的水样。A.质量法B.比色法C.溶解法D.容积法
题型:单项选择题 Steve Jobs was one of the fathers of the personal computer times and the founder of Apple. He was also one of the giants of the information age. Here are some of his greatest contributions.AppleⅡJobs and Steve Wozniak founded Apple Computers inc.in 1976. A year later, the AppleⅡwas invented. This production was the world’s first mass-market personal computer.The iMacUnder Job’s leadership, Apple introduced the all-in-one iMac computer in 1988. The iMac became the first machine which offered only a CD-ROM slot (插槽).The iPadBy 2010, Steve Jobs was confident that the world was ready to have a tablet computer that would be great for watching movies and playing games. The touch-sen-sitive iPad was a great success.The iPhone 4sThe iPhone 4s came out on October 4, 2011, in America. It looks like the iPhone 4. It has a larger and wider screen and a slimmer yet wider case. It has a better camera and faster data transfer (数据传输) speeds.小题1:When was the AppleⅡinvented?A.In 1976B.In 1977.C.In 1998.D.In 2010.小题2:Which of the following was the iMac which came out in 1988 different from others?A.People could play games on it.B.It offered only one CD-ROM slot.C.It had one camera in it.D.It had a larger screen.小题3:What was the latest product?A.The iPhone 4s.B.The AppleⅡ.C.The iPad.D.The iMac.小题4:From the passage, we can know that the iPad .A.has a better cameraB.is the first personal computerC.has a CD-ROM slotD.is great for watching movies小题5:According to the passage, which of the following about the iPhone 4s is TRUE?A.Its screen is the same size as the iPhone 4.B.It has a smaller screen and slimmer case than the iPhone 4.C.It has a larger screen and a better camera than the iPhone 4.D.It uses more time to transfer the same date than the iPhone 4. 查看答案
题型:单项选择题 我国电价改革的长期目标包括()。A.发电、售电价格由市场竞争形成 B.输电价格由政府制定 C.建立规范、透明的电价管理制度 D.配电价格由市场形成 E.终端销售价格由国务院价格主管部门制定 查看答案