题目: 黄河护堤地范围的划定标准是什么? 答案: 参考答案:(1)兰考东坝头以上黄河堤,临,背河堤脚外各不少于30m;(2)险工、涵闸、重要堤段要适当加宽;(3)原护堤地大于以上规定的,保持原边界。达不到以上规定的,办理征用或划拨手续。
题型:选择题 下列实验可达到实验目的的是( )A.将与NaOH的醇溶液共热制备CH3—CH═CH2B.乙酰水杨酸与适量NaOH溶液反应制备C.用蒸馏法分离苯和溴苯的混合物D.向卤代烃水解后的溶液中直接加入硝酸银溶液,可以确定卤代烃中的卤元素 查看答案
题型:填空题 用方框中所给单词或词组的适当形式填空,每个词只能用一次。twelve quickly come true hero your1. My shoes are black. What about ___________?2. If you put your heart into your study, I'm sure your dream will ___________. 3. December is the ___________ month of the year.4. There were many ___________ in Chinese history, we should learn from them. 5. I find watching English movies boring because the people speak too ___________. 查看答案