D. a method for manufacturing a novel artificial limb
E. A new scraping tool
Reason: "Method" can only apply for invention patent, and "product" can apply for invention patent or utility model patent.
You can get a patent for utility model,
E. A new scraping tool
Reason: products can apply for utility model patents.
You can't choose a patent for protection.
A. A new computer Chinese character input method
B. A new method for rapid diagnosis of "mad cow disease"
C. New ways to treat AIDS
Reason: A belongs to the rules and methods of intellectual activities.
B and C belong to the diagnosis and treatment method of combining records.
According to Article 25 of the Patent Law, no patent right shall be granted.