A:does the chief editor come will it be
B:the chief editor comes will it be
C:does the chief editor come it will be
D:the chief editor comes it will be
硝酸钾溶解度随温度变化的曲线如图所示:
(1)图中abc三点中属于不饱和溶液的是____ .
(2)由c点到a点可采取的措施____ .
(3)若KNO3溶液中混有少量的NaCl杂质,可以采取____方法获得较纯净的KNO3.
(4)若将b点溶液逐渐加水稀释使其质量分数降至10%,在此稀释过程中符合此溶液中溶质质量变化的规律的图象是____ .
给下面加下划线字选择正确的读音。
雏鸟____(chú zhòu) 姹紫嫣红____(zhà chà)
代替____(tì pì) 紫色____(zǐ zhǐ)