测定石油产品碘值使用的硫代硫酸钠标准滴定溶液用()进行标定。
A、碘
B、碘化钾
C、重铬酸钾
D、苯二甲酸氢钾
参考答案:C
将下列单词按其所属类别归类。
cake short hand white shirt yellow bread
jacket brown face kind hamburger mouth skirt
gray head poor apple coat happy
1. 人体部位:_________ _________ _________ _________
2. 食 物:_________ _________ _________ _________
3. 颜 色:_________ _________ _________ _________
4. 服装名称:_________ _________ _________ _________
5. 特征状态:_________ _________ _________ _________
______ being an outstanding physician and scientist, he was an accomplished writer and a gifted artist.
A.As far as
B.As well as
C.As soon as
D.As long as