网卡实现的主要功能是( )。A．物理层与网络层的功能 B．网络层与应用层的功能 C 发布时间：2017-06-01 14:15 │ 来源：www.tikuol.com 题型：单项选择题 问题： 网卡实现的主要功能是( )。A．物理层与网络层的功能B．网络层与应用层的功能C．物理层与数据链路层的功能D．网络层与表示层的功能
题型：单项选择题 “可上九天揽月，可下五洋捉鳖”，2012年6月24日在航天员的手动操作下，我国“神舟九号”宇宙飞船与“天宫一号”交互对接成功，向未来建设宇宙空间站迈向坚实一步。就在同一天，我国的“蛟龙号”载人潜水器成功下潜7020米的深度，再次创造历史记录。这两次成就的里程碑意义在于()。A.完成了“近地空间长期载人飞行”和“南海深部计划” B.丰富了人类认识和开发宇宙的梦想和实践 C.为中国在太空和海底参与国际合体提供了更多机会 D.为中国在太空和大洋这两个尚未充分利用空间的活动创造了新可能性 查看答案
题型：单项选择题 阅读理解。 New Zealand Fact box: New ZealandPosition: South of the Equator (赤道); Nearest neighbor: Australia, 1600 km away.Size: Two main islands - North Island and South Island, 268.680 sq. km togetherPopulation: 4 millionCapital: WellingtonLanguages: English and Maori What can you see?Mountains, volcanoes, rivers, lakes, waterfalls, forests,beaches. Both islands are mountainous. In fact, only 30% of New Zealand is flat. Who can you meet?Most people live on North Island. Eighty-five percent of New Zealanders are white men, whose great grandfathers camefrom Europe.Ten percent are Maoris. The Maoris came to New Zealand from the Polynesian islands probably around the tenth century. Europeans started to arrive in New Zealand about 200 years ago as farmers and traders. The MaorisWhen the Maoris first arrived in New Zealand, they lived invillages and were excellent fishermen, hunters and farmers. About 50 years ago many Maoris started to live and work in large cities and took jobs in government, industries, medicine and education. They are proud of their culture and are determined to keep many of the customs which are part of their way of life.1. Which of the following is a fact about New Zealand?A. Maoris make up 20% of the population. B. There are four million white people.C. It’s about 1600 km south of the Equator.D. Nearly 1/3 of the country is plains.2. When did the white people begin to live in New Zealand?A. 1000 years ago. B. 200 years ago. C. 85 years ago. D. 50 years ago.3. What do the Maoris value most in life?A. Living in small villages. B. Developing farming skills.C. Keeping their own culture.D. Taking up government jobs. 查看答案
题型：单项选择题 2006年4月，中国新疆汽车康托车越野挑战赛选手穿越了“生命禁区”罗布泊沙漠．当时该地最低气温约为零下10℃，昼夜温差可达40'C以上．罗布泊沙漠一天中最低气温出现的时间及昼夜温差大的原因分别是（ ）A．下午2点左右，砂石的比热大B．日出前后，砂石的比热大C．下午2点左右，砂石的比热小D．日出前后，砂石的比热小 查看答案