The direct available resistance source, () is from the origin center of herbage or disease origin center.
A: Local varieties
B: Main varieties
C: Wild species
D: Artificial mutagenic material
A: Local varieties
B: Main varieties
C: Wild species
D: Artificial mutagenic material
举一反三
- What elements are included when introducing a local product? A: history B: tool C: material D: origin
- Let us construct, with the origin(原点) as center, a semicircle(半圆) of radius R.
- My wages are the main ___________ of my income. A: source B: resource C: origin D: cause
- Decentralization let the original communication in the audience into a new source of information In other words, everyone becomes the center, which weakens the "information center" in the traditional information transmission pyramid, and makes the "audience" in the original communication become the new information source and everyone becomes the center.
- Goods handling may account for only 50% of the direct labor cost in warehouse and 70% in( ). A: Sales center B: Distribution center (B) Stock center (D) Process center