Confidence votes 20.3K. There are two basic types of submarine screws. (Screw is the proper term here as propeller is applied to small craft.) One of the screws is built for silence, and the other is built for speed. Screws built for speed typically have fewer blades and the blades are wider to grab more water as the screw spins in the water.
Economic Definition of assumption. Defined. Term assumption Definition: An initial condition or statement that sets the stage for an analysis by abstracting from the real world. Assumptions are important to economic theories and economic analysis. Some assumptions are used to simplify a complex analysis into more easily manageable parts.
ACCOUNTING CONVENTIONS AND STANDARDS. Accounting conventions (or assumptions) are the basic rules of accounting which have become acceptable procedures over time.They are the basic rules of accounting. Accounting standards are laws for members of the professional bodies to follow.he historical cost convention is a rule which states that all transactions are recorded at their original value, and adjustments are not made for inflation. This means that assets are not valued at what they could be sold for at the present time.