{"A":"We are having fun in Hangzhou.","B":"We are having dinner in a restaurant."}

题干

A：We are having fun in Hangzhou.

B：We are having dinner in a restaurant.

上一题下一题 0.0难度选择题更新时间:2017-07-07 01:04:25

下列图象能正确反映对应变化关系的是（）


A、在恒温条件下，将足量的饱和硝酸钾溶液蒸发一定量水	B、将等质量的镁片和铁片投入到足量稀硫酸中	C、用等质量、等溶质质量分数的过氧化氢溶液制取氧气	D、向一定量硫酸和硫酸铜混合溶液中滴入氢氧化钠溶液