Question

B. Fill in the blanks.
1. The three basic physical quantities are and 1
2. A length equal to part of a metre is 1000
3. One kilometre is mm.
4. units are got by combining units by multiplication or division.
5. A laboratory thermoeter uses as a thermometeric fluid.
6. is a device that would measure time most accurately.​

Answer 1

Answer:

i don't know I don't know