目前，汽车生产企业的经营模式主要为（）A、以产定销 B、以销定产 C、定量生产 发布时间：2018-03-04 23:45 │ 来源：www.tikuol.com 题型：单项选择题 问题： 目前，汽车生产企业的经营模式主要为（）A、以产定销B、以销定产C、定量生产
题型：单项选择题 请从①氢气 ②氮气 ③石灰石 ④干冰 ⑤一氧化碳 ⑥浓硫酸 ⑦水 ⑧石墨 中选择适当的物质，用化学式填空．（1）用于人工降雨的是______； （2）充入食品包装袋中可防腐的是______；（3）自然界最轻的气体是______； （4）孕育和维系生命的液态物质是______；（5）有剧毒的气体是______； （6）可用作固体润滑剂的是______． 查看答案
题型：单项选择题 根据对话内容。选择恰当的句子补全下列对话。(每小题1分，共5分)A: Tomorrow is Sunday. What do you plan to do?B :小题1:_____________ Maybe I will surf the Internet at home.A: It's boring to stay at home all the time小题2:_____________B: That sounds like a good idea小题3:_____________A: Let's go to visit a village not far from here.B:小题4:_____________A: Many wonderful things. We may watch wild flowers, play with the farmers' animals and even taste all kinds of delicious food in the countryside. 小题5:_____________B: Great! I can't wait to go there. How shall we go?A: What about riding our bikes? 100B : OK ! See you tomorrow.A : See you.A. What can we do there?B. But where shall we go?C. I haven't decided yet.D. It's good for our health.E. When and where will we meet?F. The farmers are sure to welcome us.G. Why not do some outdoor activities? 查看答案