Which of the following pigments is not a synthetic pigment? ( )
A: Indigo
B: Sunset yellow
C: Beet red
D: Amaranth
A: Indigo
B: Sunset yellow
C: Beet red
D: Amaranth
举一反三
- Which of the following pigments is a not endogenous pigment? A: hemosiderin B: lipofuscin C: bilirubin D: carotene
- Which of the followings is not a polyphenolic pigment ( ). A: Anthocyanins B: Flavonoid pigments C: Catechin D: Lutein
- Through spectral analysis of Yangshao culture pigments, the most prominent element in the red pigment was _____. A: tin B: silicon C: copper D: iron
- Which of the following are the channels at the customs? A: the red channel B: the yellow channel C: the green channel D: the blue channel
- Indigo prints are made of homespun fabrics with blue designs on a ___________ background or white designs on a ___________ background. A: yellow; green B: white; blue C: red; black D: red; brown