A: inorganic
B: organic
C: coordinate
D: --
举一反三
- 中国大学MOOC: Vitamins are chemical.
- Vitamins are a type of organic matter.
- 1. "College Chemistry" (part I)-the main subjects covered by the teaching content of basic chemistry are A: Inorganic chemistry, analytical chemistry, organic chemistry, physical chemistry. B: Inorganic chemistry, analytical chemistry, physical chemistry. C: Inorganic chemistry, analytical chemistry. D: Organic chemistry.
- Vitamins are a type of organic matter. A: 正确 B: 错误
- Vitamins are a class of high molecular organic compounds( )
内容
- 0
of all organic chemical is obtained from crude oil and natural gas. A: 80% B: 99% C: 70% D: 79%
- 1
Which of the following description is not from the Ecocentrism perspective: A: Abandon anthropocentric and natural centrism dichotomous opposition between sub and objective. B: Human beings are just part of the earth community, can not exist in isolation or separation from nature. C: Human interests subjected to the overall eco-interests. People are separable from the inorganic/organic nature that encapsulates them. D: People are separable from the inorganic/organic nature that encapsulates them.
- 2
Organic farmers do not use chemical fertilizers, genetically engineered seeds, or harmful chemicals to kill ___1___ and ____2___.
- 3
Most chemical reactions of an organic compound involve only a few of its numerous atoms; the remainder stay unchanged. A: majority B: distribution C: rest D: stability
- 4
In order to accurately describe the model we have introduced the following model A: pixel coordinate system B: image coordinate system C: camera coordinate system D: world coordinate system