题目内容
在弱碱性溶液中，当适量的，KMnO4与Na2SO3反应时出现的现象是（)
查看答案
搜索结果不匹配？点我反馈
更多问题
下列金属离子的溶液在空气中放置时，易被氧化变质的是（ ）
Complete the sentences, using words or phrases in brackets. Make additions and changes where necessary:1) ____________________an enemy forces much superior to ours, we had to give up ____________ big cities and retreat to the rural and mountainous ______________ to build up our base.
2) Unity is __________ the ____________ operation of an organization. Failure ____________ this problem will ___________ its strength. In many cases, work may ____________ by constant internal struggle in an organization.
3)The Red Army fought ____________ battle at Stalingrad and won _____________ victory against the Germans. In fact, this battle __________ in the Second World War. During this famous battle, the Soviet troops withstood the German _____________ and weakened the German army ____________ a series of counterbacks.
微信支付 
支付宝支付