Which are belonging to the controllable factor research ?
举一反三
- Which one is not belonging to the components of research methodology?
- Factor F is a kind of plasmid belonging to appendage, which mediates the conjugation of Escherichia coli
- Social culture factor research belongs to uncontrollable factor research.
- Political environment research belongs to uncontrollable factor research.
- Which one is not belonging to the payment term?