Question

You want to place a piece of glass tubing into a rubber stopper after the tubing has been fire polished and cooled. This is best done by

A. lubricating the tubing with water or glycerin.

B. using a towel or cotton gloves for protection.

C. twisting the tubing and stopper carefully.

D. all of the above.

Answer 1

a

Step-by-step explanation:

The history of Poland from 1945 to 1989 spans the period of communist rule imposed over Poland after the end of World War II.