题型:问答题 简答题 小明同学在课余把铜片A和铁片B插到菠萝中,做成了一个“水果电池”,将此电池直接接到电压表两端,电压表指针偏转如图所示.“水果电池”供电时,将______能转化为电能,铜片A是电池的______极(选填“正”或“负”). 查看答案
题型:问答题 简答题 A study show that students with positive attitudes _____life and open minds _____differen deas often have high EQsA towards for B towards to C towards for D for towards 查看答案