类比类推法适用于各类信息化项目。
参考答案:对
It never occurred to me _____ you could succeed in persuading him to change his mind.
A.which
B.what
C.that
D.if
将6.2克氧化钠粉末投入43.8克水中,完全溶解后,计算所得溶液中溶质的质量分数.