Casting solidification is generally divided into three types:__________, __________ and __________.
举一反三
- The remittance can be divided into three types
- What types can abbreviations be divided into, generally speaking?
- Chinese scripts are generally divided into three categories.
- To avoid cracking of the casting, there should be ____________ for shrinkage during solidification
- Generally speaking, a presentation can be divided into three parts: introduction, body and conclusion.( )