在探究细菌和真菌的分布实验中，下列操作不正确的是（）。 A．培养基要经过高温灭菌 发布时间：2017-05-03 18:45 │ 来源：www.tikuol.com 题型：选择题 问题： 在探究细菌和真菌的分布实验中，下列操作不正确的是（ ）。A．培养基要经过高温灭菌处理B．接种后，要迅速盖好培养皿C．若探究手上的菌类，要将培养皿放在37℃下恒温培养D．不需要设置对照实验
题型：选择题 阅读短文，选择正确答案。 Can you protect our Planet Earth? You may think it impossible, but you can begin by taking some small, but important, first steps. Many children and their classes in the USA are starting some projects. Children Campaign Against Waste Children are paying attention to the packaging (包装) of the things they buy. Packaging includes all the thingsyou throw away when you unwrap anything new. One third of all rubbish is packaging. Mrs. Perez's 4th grade class decides to make their school and neighborhood know the waste in packaging. They want people to think before they buy. They also want to let people who make the products know that they want less waste in packaging. So they start a campaign to help people change how they shop. Class Project: Campaign Against Waste ·Find out the facts. Use the websites to find out how much waste comes from packaging. ·Go on a trip to the shops. Take notes about how products, such as CDs, are packaged. Report on how much will be throw away. ·Say no to bags. If we don't need one, we don't use one. ·Make posters to tell others what they can do. ·Talk to our families and friends about what we learn. ·Write class letters to the people who produce our favorite products. Ask them to reduce packaging. Another class decides to help save water. Here's how they started. Miguel Salazar lives in Meridien, Texas. Every day he walks home from school and passes Carrollon Creek(小溪). The creek filled with rubbish. But the creek was not always this way. Miguel's grandfather remembersflowers and plants grew along it. Many people fished there. So Miguel's class decides to clean up the creek. They make a plan. Class Project: Creek Clean Up ·Write a letter to the mayor (市长) asking her to let us have a clean-up day at Carrollon Creek. Ask her for garbage cans to keep rubbish. ·Make posters inviting others to help. ·Ask parents to come along and help on Clean-up Day. ·Choose a day for the big Clean Up! If one person can make a difference, think how much more can get done if people work together to care forPlanet Earth. 1. The children in Mrs. Peraz's class start the campaign against ________. [ ]A. water B. waste C. shopping D. fishing 2. Miguel's class project is to ________. [ ]A. stop packaging B. go on a trip C. clean up Carrollton Creek D. talk to families and friends 3. Miguel's class wants to ask for some ________ to keep the rubbish. [ ]A. rubbish cans B. websites C. packages D. money 4. Which of the following is NOT talked in the passage? [ ]A. There used to be flowers and plants along the creek. B. One third of all rubbish is packaging. C. Children use posters and letters to help with their work. D. Mrs. Perez's class wants to choose a day for not using bags. 5. What's the main idea of the passage? [ ]A. Children can use the websites to find out the facts. B. People liked to fish along Carrollton Creek in the past. C. Everyone can do something small to help save Planet Earth. D. The mayor in Meridien can help the children with their project. 查看答案
题型：选择题 测试结果文档内容应包括以下哪些信息？（）A.由受检单位提供的被测光伏电站的规格参数B.现场测试环境参数C.各项测试条件下被测光伏电站测试结果D.由受检单位提供的被测光伏电站的规格参数 查看答案