根据《煤矿安全培训监督检查办法(试行)》,井下作业人员安全教育和培训应当使从业人员掌 发布时间:2017-05-02 19:28 │ 来源:www.tikuol.com 题型:判断题 问题: 根据《煤矿安全培训监督检查办法(试行)》,井下作业人员安全教育和培训应当使从业人员掌握的知识和技能不包括:入井需知、通风安全系统、报警系统和安全指示标志。
题型:判断题 Read and write. 让我们一起进入阅读乐园吧! Hello! I am Mike's mother. Today is Sunday. I don't go to work. Every weekendI don't go to work. I often read some books on the weekend. I like buying new clothes.So I go shopping on the weekend. Sometimes I play the piano at home. I go hiking every weekend. I like weekend. It's fun. A) Read and judge. 判断下面说法是否正确,正确的写“T”,错误的写“F”。 ( ) 1. Today is Friday. ( ) 2. Today Mike's mother doesn't go to work. ( ) 3. She goes shopping on the weekend. ( ) 4. She doesn't like weekend.B) Read and answer. 回答问题。 What does Mike's mother do on the weekend? 查看答案
题型:判断题 (8分)相对分子质量为58的烃或烃的含氧衍生物有多种。请写出符合下列条件的结构简式。(1)分子结构中含有三个—CH3的是 ;(2)分子结构中有一个—CH3,且能发生银镜反应的是 ;(3)分子结构中无—CH3,也无—OH,但能发生银镜反应的是 ;(4)能和金属钠反应且不能使溴的四氯化碳溶液褪色的化合物 。 查看答案