an opaque, usually white, fluid applied to paper to mask errors in text
A:
A:
举一反三
- The paper used for the traditional Chinese paper-cuts is usually of colour. A: yellow B: ed C: green D: white
- An ideal fluid is usually defined as a fluid in which there is no friction.()
- N-S equation cannot be applied to ( ) A: Flow of incompressible viscous fluid B: Unsteady flow of incompressible ideal fluid C: Steady flow of incompressible ideal fluid D: Motion of non-Newtonian fluid
- Usually grammatical errors will not impede the natitve speakers’ understanding of the conversation.
- A paper is usually reviewed by one reviewer.