主页
学科
搜索
账户
常见问题
当前学科：土壤学
题目：
名词解释
土壤酶活性 soil enzyme activity
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:
When Betty Burwood won the national lottery, she and her husband, Bill, moved into abeautiful big bungalow and she bought herself a very expensive pearl necklaceThe following summer, the Burwoods decided to throw a party. Early on the afternoonof the party, Betty took her new silk dress out of the wardrobe and put her expensive pearlnecklace on her dressing-table ready to put on in the evening. Then, she went to see how thepreparations for the party were goingThe catering company had just arrived - a cook, Mrs. Moore, and her two helpers,Nancy and Harriet. They were all in the kitchen unpacking the piles of boxes which they hadbrought with them. Soon, the fourth member of the team, Charlie Chivers, arrived on hisbicycleBy six o' clock, everything was ready. The garden looked magnificent - with smallround tables and colorful chairs and sun shades. The food and drink was all laid out in thekitchen, ready to be brought out when the guests arrivedAt ten past six, Betty went to her bedroom to get ready. She showered and put on herbest silk dress. It was when she was brushing her hair that she realized that her pearls werenot on the dressing-table. "Bill," she said, "have you moved my pearls?" "No, dear,"answered Hill, "where were they?" "1 put them on the drussing-tabie this afternoon andthey're not here now. ""Are you sure?" asked Bill. "Maybe you put them down somewhereelse, or maybe you,ye moved them"For a quarter of an hour they searched for the missing pearls, but couldn't find themanywhere. It was then that they decided they must call the policeSoon, Inspector Morgan arrived and started to question all the suspectsRead Passage 1 and then try to give short answers 协 Questions 1-5. Write your answers on theAnswer Sheeti. Why could Betty afford an expensive necklace?2. Why did she take her necklace out early in the day?3. How many people were there in the catering company?4. What do you think was in the boxes?5. Did the Burwoods call the police after they couldn't find the pear's?Read again and then fill in the following blanks numbered 6-10 with the information from the passage. Write you answers on the Answer Sheet
战略综合分析的方法主要有什么？
在一定条件下，增加公共产品的消费者人数并不需要减少其他消费品的生产。
印度的重要城市加尔各答毗邻（）。
阅读下列材料，回答有关问题。 材料一：雅砻江锦屏二级水电站位于四川省凉山彝族自治州木里、盐源、冕宁三县交界处的雅砻江干流锦屏大河湾上，锦屏大河湾地区位于青藏高原向四川盆地过渡的斜坡地带。电站利用雅砻江锦屏大河湾的310米天然落差，截弯取直开挖隧洞引水发电。 材料二：引水隧洞沿线剖面示意图（东雅砻江与西雅砻江之间即为锦屏山）。 东雅砻江河谷处于什么地质构造？请简述该河谷的成因。 锦屏山地质条件异常特殊且十分复杂，一直是工程勘测设计中极为关注的主要地质问题之一。试分析锦屏山岩溶地貌广泛存在的原因。 锦屏山区域正在强力推进生态建设，实施植绿复绿工程。锦屏山植被破坏最可能的人为原因是什么？可能会引发什么地质灾害？ 请从地质构造角度简析④、⑦两个地点需要采取特别加固措施的原因？
病理性的持续睡眠状态，可被唤醒，并能正确回答问题称为（）
少先队是负担起新世纪建设中国特色社会主义重任的（）。
烧结料层提高后，由于“自动蓄热”等原因，减少固体燃料的配加量使FeO含量（）
关于室性期前收缩引起心悸感觉描述正确的是（）。
度量物体温度的仪器是温度计，温度的三种表示方法是（）。