题目内容
Which of the following pigments is not a synthetic pigment? ( )
查看答案
搜索结果不匹配？点我反馈
更多问题
Which of the following olfactory substances does not belong to terpenes? ( )
Which of the following characteristic odors is formed through chemical reactions without enzymes? ( )
The following substances put together will produce the counteraction and weakening effect of the sense of taste is ( ).
Where is the sour taste mainly perceived by the tongue? ( )
微信支付 
支付宝支付